Merge pull request #1280 from hf200012/doriswriter-1

[New Feature]Add support for writing data to Apache Doris

core/pom.xml

@@ -41,7 +41,7 @@
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
             <artifactId>httpclient</artifactId>
-            <version>4.5</version>
+            <version>4.5.13</version>
         </dependency>
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>

doriswriter/doc/doriswriter.md

@@ -0,0 +1,181 @@
+# DorisWriter 插件文档
+
+## 1 快速介绍
+DorisWriter支持将大批量数据写入Doris中。
+
+## 2 实现原理
+DorisWriter 通过Doris原生支持Stream load方式导入数据， DorisWriter会将`reader`读取的数据进行缓存在内存中，拼接成Json文本，然后批量导入至Doris。
+
+## 3 功能说明
+
+### 3.1 配置样例
+
+这里是一份从Stream读取数据后导入至Doris的配置文件。
+
+```
+{
+    "job": {
+        "content": [
+            {
+                "reader": {
+                    "name": "mysqlreader",
+                    "parameter": {
+                        "column": ["emp_no", "birth_date", "first_name","last_name","gender","hire_date"],
+                        "connection": [
+                            {
+                                "jdbcUrl": ["jdbc:mysql://localhost:3306/demo"],
+                                "table": ["employees_1"]
+                            }
+                        ],
+                        "username": "root",
+                        "password": "xxxxx",
+                        "where": ""
+                    }
+                },
+                "writer": {
+                    "name": "doriswriter",
+                    "parameter": {
+                        "loadUrl": ["172.16.0.13:8030"],
+                        "loadProps": {
+                        },
+                        "column": ["emp_no", "birth_date", "first_name","last_name","gender","hire_date"],
+                        "username": "root",
+                        "password": "xxxxxx",
+                        "postSql": ["select count(1) from all_employees_info"],
+                        "preSql": [],
+                        "flushInterval":30000,
+                        "connection": [
+                          {
+                            "jdbcUrl": "jdbc:mysql://172.16.0.13:9030/demo",
+                            "selectedDatabase": "demo",
+                            "table": ["all_employees_info"]
+                          }
+                        ],
+                        "loadProps": {
+                            "format": "json",
+                            "strip_outer_array": true
+                        }
+                    }
+                }
+            }
+        ],
+        "setting": {
+            "speed": {
+                "channel": "1"
+            }
+        }
+    }
+}
+```
+
+### 3.2 参数说明
+
+* **jdbcUrl**
+
+    - 描述：Doris 的 JDBC 连接串，用户执行 preSql 或 postSQL。
+    - 必选：是
+    - 默认值：无
+
+* **loadUrl**
+
+  - 描述：作为 Stream Load 的连接目标。格式为 "ip:port"。其中 IP 是 FE 节点 IP，port 是 FE 节点的 http_port。可以填写多个，多个之间使用英文状态的分号隔开:`;`，doriswriter 将以轮询的方式访问。
+  - 必选：是
+  - 默认值：无
+
+* **username**
+
+    - 描述：访问Doris数据库的用户名
+    - 必选：是
+    - 默认值：无
+    
+* **password**
+  
+    - 描述：访问Doris数据库的密码
+    - 必选：否
+    - 默认值：空
+
+* **connection.selectedDatabase**
+    - 描述：需要写入的Doris数据库名称。
+    - 必选：是
+    - 默认值：无
+    
+* **connection.table**
+  - 描述：需要写入的Doris表名称。
+    - 必选：是
+    - 默认值：无
+    
+* **column**
+
+    - 描述：目的表**需要写入数据**的字段，这些字段将作为生成的 Json 数据的字段名。字段之间用英文逗号分隔。例如: "column": ["id","name","age"]。
+    - 必选：是
+    - 默认值：否
+
+* **preSql**
+
+  - 描述：写入数据到目的表前，会先执行这里的标准语句。
+  - 必选：否
+  - 默认值：无
+
+* **postSql**
+
+  - 描述：写入数据到目的表后，会执行这里的标准语句。
+  - 必选：否
+  - 默认值：无
+
+
+* **maxBatchRows**
+
+  - 描述：每批次导入数据的最大行数。和 **maxBatchSize** 共同控制每批次的导入数量。每批次数据达到两个阈值之一，即开始导入这一批次的数据。
+  - 必选：否
+  - 默认值：500000
+
+* **maxBatchSize**
+
+  - 描述：每批次导入数据的最大数据量。和 **maxBatchRows** 共同控制每批次的导入数量。每批次数据达到两个阈值之一，即开始导入这一批次的数据。
+  - 必选：否
+  - 默认值：104857600
+
+* **maxRetries**
+
+  - 描述：每批次导入数据失败后的重试次数。
+  - 必选：否
+  - 默认值：0
+
+* **labelPrefix**
+
+  - 描述：每批次导入任务的 label 前缀。最终的 label 将有 `labelPrefix + UUID` 组成全局唯一的 label，确保数据不会重复导入
+  - 必选：否
+  - 默认值：`datax_doris_writer_`
+
+* **loadProps**
+
+  - 描述：StreamLoad 的请求参数，详情参照StreamLoad介绍页面。[Stream load - Apache Doris](https://doris.apache.org/zh-CN/docs/data-operate/import/import-way/stream-load-manual)
+
+    这里包括导入的数据格式：format等，导入数据格式默认我们使用csv，支持JSON，具体可以参照下面类型转换部分，也可以参照上面Stream load 官方信息
+
+  - 必选：否
+
+  - 默认值：无
+
+### 类型转换
+
+默认传入的数据均会被转为字符串，并以`\t`作为列分隔符，`\n`作为行分隔符，组成`csv`文件进行StreamLoad导入操作。
+
+默认是csv格式导入，如需更改列分隔符， 则正确配置 `loadProps` 即可：
+
+```json
+"loadProps": {
+    "column_separator": "\\x01",
+    "row_delimiter": "\\x02"
+}
+```
+
+如需更改导入格式为`json`， 则正确配置 `loadProps` 即可：
+```json
+"loadProps": {
+    "format": "json",
+    "strip_outer_array": true
+}
+```
+
+更多信息请参照 Doris 官网：[Stream load - Apache Doris](https://doris.apache.org/zh-CN/docs/data-operate/import/import-way/stream-load-manual)

doriswriter/doc/mysql2doris.json

@@ -0,0 +1,46 @@
+{
+    "job": {
+        "content": [
+            {
+                "reader": {
+                    "name": "mysqlreader",
+                    "parameter": {
+                        "column": ["k1", "k2", "k3"],
+                        "connection": [
+                            {
+                                "jdbcUrl": ["jdbc:mysql://192.168.10.10:3306/db1"],
+                                "table": ["t1"]
+                            }
+                        ],
+                        "username": "root",
+                        "password": "",
+                        "where": ""
+                    }
+                },
+                "writer": {
+                    "name": "doriswriter",
+                    "parameter": {
+                        "loadUrl": ["192.168.1.1:8030"],
+                        "loadProps": {},
+                        "database": "db1",
+                        "column": ["k1", "k2", "k3"],
+                        "username": "root",
+                        "password": "",
+                        "postSql": [],
+                        "preSql": [],
+                        "connection": [
+                            "jdbcUrl":"jdbc:mysql://192.168.1.1:9030/",
+                            "table":["xxx"],
+                            "selectedDatabase":"xxxx"
+                        ]
+                    }
+                }
+            }
+        ],
+        "setting": {
+            "speed": {
+                "channel": "1"
+            }
+        }
+    }
+}

doriswriter/pom.xml

@@ -0,0 +1,99 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>datax-all</artifactId>
+        <groupId>com.alibaba.datax</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>doriswriter</artifactId>
+    <name>doriswriter</name>
+    <packaging>jar</packaging>
+    <dependencies>
+        <dependency>
+            <groupId>com.alibaba.datax</groupId>
+            <artifactId>datax-common</artifactId>
+            <version>${datax-project-version}</version>
+            <exclusions>
+                <exclusion>
+                    <artifactId>slf4j-log4j12</artifactId>
+                    <groupId>org.slf4j</groupId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.alibaba.datax</groupId>
+            <artifactId>plugin-rdbms-util</artifactId>
+            <version>${datax-project-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>${mysql.driver.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.httpcomponents</groupId>
+            <artifactId>httpclient</artifactId>
+            <version>4.5.13</version>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <!-- compiler plugin -->
+            <plugin>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>${jdk-version}</source>
+                    <target>${jdk-version}</target>
+                    <encoding>${project-sourceEncoding}</encoding>
+                </configuration>
+            </plugin>
+            <!-- assembly plugin -->
+            <plugin>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <configuration>
+                    <descriptors>
+                        <descriptor>src/main/assembly/package.xml</descriptor>
+                    </descriptors>
+                    <finalName>datax</finalName>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>dwzip</id>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>

doriswriter/src/main/assembly/package.xml

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+<assembly xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0"
+          xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">
+    <id/>
+    <formats>
+        <format>dir</format>
+    </formats>
+    <includeBaseDirectory>false</includeBaseDirectory>
+    <fileSets>
+        <fileSet>
+            <directory>src/main/resources</directory>
+            <includes>
+                <include>plugin.json</include>
+                <include>plugin_job_template.json</include>
+            </includes>
+            <outputDirectory>plugin/writer/doriswriter</outputDirectory>
+        </fileSet>
+        <fileSet>
+            <directory>target/</directory>
+            <includes>
+                <include>doriswriter-0.0.1-SNAPSHOT.jar</include>
+            </includes>
+            <outputDirectory>plugin/writer/doriswriter</outputDirectory>
+        </fileSet>
+    </fileSets>
+    <dependencySets>
+        <dependencySet>
+            <useProjectArtifact>false</useProjectArtifact>
+            <outputDirectory>plugin/writer/doriswriter/libs</outputDirectory>
+            <scope>runtime</scope>
+        </dependencySet>
+    </dependencySets>
+</assembly>

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DelimiterParser.java

@@ -0,0 +1,54 @@
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import com.google.common.base.Strings;
+
+import java.io.StringWriter;
+
+public class DelimiterParser {
+
+    private static final String HEX_STRING = "0123456789ABCDEF";
+
+    public static String parse(String sp, String dSp) throws RuntimeException {
+        if ( Strings.isNullOrEmpty(sp)) {
+            return dSp;
+        }
+        if (!sp.toUpperCase().startsWith("\\X")) {
+            return sp;
+        }
+        String hexStr = sp.substring(2);
+        // check hex str
+        if (hexStr.isEmpty()) {
+            throw new RuntimeException("Failed to parse delimiter: `Hex str is empty`");
+        }
+        if (hexStr.length() % 2 != 0) {
+            throw new RuntimeException("Failed to parse delimiter: `Hex str length error`");
+        }
+        for (char hexChar : hexStr.toUpperCase().toCharArray()) {
+            if (HEX_STRING.indexOf(hexChar) == -1) {
+                throw new RuntimeException("Failed to parse delimiter: `Hex str format error`");
+            }
+        }
+        // transform to separator
+        StringWriter writer = new StringWriter();
+        for (byte b : hexStrToBytes(hexStr)) {
+            writer.append((char) b);
+        }
+        return writer.toString();
+    }
+
+    private static byte[] hexStrToBytes(String hexStr) {
+        String upperHexStr = hexStr.toUpperCase();
+        int length = upperHexStr.length() / 2;
+        char[] hexChars = upperHexStr.toCharArray();
+        byte[] bytes = new byte[length];
+        for (int i = 0; i < length; i++) {
+            int pos = i * 2;
+            bytes[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
+        }
+        return bytes;
+    }
+
+    private static byte charToByte(char c) {
+        return (byte) HEX_STRING.indexOf(c);
+    }
+}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisBaseCodec.java

@@ -0,0 +1,23 @@
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import com.alibaba.datax.common.element.Column;
+
+public class DorisBaseCodec {
+    protected String convertionField( Column col) {
+        if (null == col.getRawData() || Column.Type.NULL == col.getType()) {
+            return null;
+        }
+        if ( Column.Type.BOOL == col.getType()) {
+            return String.valueOf(col.asLong());
+        }
+        if ( Column.Type.BYTES == col.getType()) {
+            byte[] bts = (byte[])col.getRawData();
+            long value = 0;
+            for (int i = 0; i < bts.length; i++) {
+                value += (bts[bts.length - i - 1] & 0xffL) << (8 * i);
+            }
+            return String.valueOf(value);
+        }
+        return col.asString();
+    }
+}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisCodec.java

@@ -0,0 +1,10 @@
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import com.alibaba.datax.common.element.Record;
+
+import java.io.Serializable;
+
+public interface DorisCodec extends Serializable {
+
+    String codec( Record row);
+}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisCodecFactory.java

@@ -0,0 +1,19 @@
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import java.util.Map;
+
+public class DorisCodecFactory {
+    public DorisCodecFactory (){
+
+    }
+    public static DorisCodec createCodec( Keys writerOptions) {
+        if ( Keys.StreamLoadFormat.CSV.equals(writerOptions.getStreamLoadFormat())) {
+            Map<String, Object> props = writerOptions.getLoadProps();
+            return new DorisCsvCodec (null == props || !props.containsKey("column_separator") ? null : String.valueOf(props.get("column_separator")));
+        }
+        if ( Keys.StreamLoadFormat.JSON.equals(writerOptions.getStreamLoadFormat())) {
+            return new DorisJsonCodec (writerOptions.getColumns());
+        }
+        throw new RuntimeException("Failed to create row serializer, unsupported `format` from stream load properties.");
+    }
+}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisCsvCodec.java

@@ -0,0 +1,27 @@
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import com.alibaba.datax.common.element.Record;
+
+public class DorisCsvCodec extends DorisBaseCodec implements DorisCodec {
+
+    private static final long serialVersionUID = 1L;
+
+    private final String columnSeparator;
+
+    public DorisCsvCodec ( String sp) {
+        this.columnSeparator = DelimiterParser.parse(sp, "\t");
+    }
+
+    @Override
+    public String codec( Record row) {
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < row.getColumnNumber(); i++) {
+            String value = convertionField(row.getColumn(i));
+            sb.append(null == value ? "\\N" : value);
+            if (i < row.getColumnNumber() - 1) {
+                sb.append(columnSeparator);
+            }
+        }
+        return sb.toString();
+    }
+}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisJsonCodec.java

@@ -0,0 +1,33 @@
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import com.alibaba.datax.common.element.Record;
+import com.alibaba.fastjson.JSON;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class DorisJsonCodec extends DorisBaseCodec implements DorisCodec {
+
+    private static final long serialVersionUID = 1L;
+
+    private final List<String> fieldNames;
+
+    public DorisJsonCodec ( List<String> fieldNames) {
+        this.fieldNames = fieldNames;
+    }
+
+    @Override
+    public String codec( Record row) {
+        if (null == fieldNames) {
+            return "";
+        }
+        Map<String, Object> rowMap = new HashMap<> (fieldNames.size());
+        int idx = 0;
+        for (String fieldName : fieldNames) {
+            rowMap.put(fieldName, convertionField(row.getColumn(idx)));
+            idx++;
+        }
+        return JSON.toJSONString(rowMap);
+    }
+}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisStreamLoadObserver.java

@@ -0,0 +1,233 @@
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import com.alibaba.fastjson.JSON;
+import org.apache.commons.codec.binary.Base64;
+import org.apache.http.HttpEntity;
+import org.apache.http.client.config.RequestConfig;
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.methods.HttpPut;
+import org.apache.http.entity.ByteArrayEntity;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.DefaultRedirectStrategy;
+import org.apache.http.impl.client.HttpClientBuilder;
+import org.apache.http.impl.client.HttpClients;
+import org.apache.http.util.EntityUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+
+public class DorisStreamLoadObserver {
+    private static final Logger LOG = LoggerFactory.getLogger(DorisStreamLoadObserver.class);
+
+    private Keys options;
+
+    private long pos;
+    private static final String RESULT_FAILED = "Fail";
+    private static final String RESULT_LABEL_EXISTED = "Label Already Exists";
+    private static final String LAEBL_STATE_VISIBLE = "VISIBLE";
+    private static final String LAEBL_STATE_COMMITTED = "COMMITTED";
+    private static final String RESULT_LABEL_PREPARE = "PREPARE";
+    private static final String RESULT_LABEL_ABORTED = "ABORTED";
+    private static final String RESULT_LABEL_UNKNOWN = "UNKNOWN";
+
+
+    public DorisStreamLoadObserver ( Keys options){
+        this.options = options;
+    }
+
+    public void streamLoad(WriterTuple data) throws Exception {
+        String host = getLoadHost();
+        if(host == null){
+            throw new IOException ("load_url cannot be empty, or the host cannot connect.Please check your configuration.");
+        }
+        String loadUrl = new StringBuilder(host)
+                .append("/api/")
+                .append(options.getDatabase())
+                .append("/")
+                .append(options.getTable())
+                .append("/_stream_load")
+                .toString();
+        LOG.info("Start to join batch data: rows[{}] bytes[{}] label[{}].", data.getRows().size(), data.getBytes(), data.getLabel());
+        Map<String, Object> loadResult = put(loadUrl, data.getLabel(), addRows(data.getRows(), data.getBytes().intValue()));
+        LOG.info("StreamLoad response :{}",JSON.toJSONString(loadResult));
+        final String keyStatus = "Status";
+        if (null == loadResult || !loadResult.containsKey(keyStatus)) {
+            throw new IOException("Unable to flush data to Doris: unknown result status.");
+        }
+        LOG.debug("StreamLoad response:{}",JSON.toJSONString(loadResult));
+        if (RESULT_FAILED.equals(loadResult.get(keyStatus))) {
+            throw new IOException(
+                    new StringBuilder("Failed to flush data to Doris.\n").append(JSON.toJSONString(loadResult)).toString()
+            );
+        } else if (RESULT_LABEL_EXISTED.equals(loadResult.get(keyStatus))) {
+            LOG.debug("StreamLoad response:{}",JSON.toJSONString(loadResult));
+            checkStreamLoadState(host, data.getLabel());
+        }
+    }
+
+    private void checkStreamLoadState(String host, String label) throws IOException {
+        int idx = 0;
+        while(true) {
+            try {
+                TimeUnit.SECONDS.sleep(Math.min(++idx, 5));
+            } catch (InterruptedException ex) {
+                break;
+            }
+            try (CloseableHttpClient httpclient = HttpClients.createDefault()) {
+                HttpGet httpGet = new HttpGet(new StringBuilder(host).append("/api/").append(options.getDatabase()).append("/get_load_state?label=").append(label).toString());
+                httpGet.setHeader("Authorization", getBasicAuthHeader(options.getUsername(), options.getPassword()));
+                httpGet.setHeader("Connection", "close");
+
+                try (CloseableHttpResponse resp = httpclient.execute(httpGet)) {
+                    HttpEntity respEntity = getHttpEntity(resp);
+                    if (respEntity == null) {
+                        throw new IOException(String.format("Failed to flush data to Doris, Error " +
+                                "could not get the final state of label[%s].\n", label), null);
+                    }
+                    Map<String, Object> result = (Map<String, Object>)JSON.parse(EntityUtils.toString(respEntity));
+                    String labelState = (String)result.get("state");
+                    if (null == labelState) {
+                        throw new IOException(String.format("Failed to flush data to Doris, Error " +
+                                "could not get the final state of label[%s]. response[%s]\n", label, EntityUtils.toString(respEntity)), null);
+                    }
+                    LOG.info(String.format("Checking label[%s] state[%s]\n", label, labelState));
+                    switch(labelState) {
+                        case LAEBL_STATE_VISIBLE:
+                        case LAEBL_STATE_COMMITTED:
+                            return;
+                        case RESULT_LABEL_PREPARE:
+                            continue;
+                        case RESULT_LABEL_ABORTED:
+                            throw new DorisWriterExcetion (String.format("Failed to flush data to Doris, Error " +
+                                    "label[%s] state[%s]\n", label, labelState), null, true);
+                        case RESULT_LABEL_UNKNOWN:
+                        default:
+                            throw new IOException(String.format("Failed to flush data to Doris, Error " +
+                                    "label[%s] state[%s]\n", label, labelState), null);
+                    }
+                }
+            }
+        }
+    }
+
+    private byte[] addRows(List<byte[]> rows, int totalBytes) {
+        if (Keys.StreamLoadFormat.CSV.equals(options.getStreamLoadFormat())) {
+            Map<String, Object> props = (options.getLoadProps() == null ? new HashMap<> () : options.getLoadProps());
+            byte[] lineDelimiter = DelimiterParser.parse((String)props.get("row_delimiter"), "\n").getBytes(StandardCharsets.UTF_8);
+            ByteBuffer bos = ByteBuffer.allocate(totalBytes + rows.size() * lineDelimiter.length);
+            for (byte[] row : rows) {
+                bos.put(row);
+                bos.put(lineDelimiter);
+            }
+            return bos.array();
+        }
+
+        if (Keys.StreamLoadFormat.JSON.equals(options.getStreamLoadFormat())) {
+            ByteBuffer bos = ByteBuffer.allocate(totalBytes + (rows.isEmpty() ? 2 : rows.size() + 1));
+            bos.put("[".getBytes(StandardCharsets.UTF_8));
+            byte[] jsonDelimiter = ",".getBytes(StandardCharsets.UTF_8);
+            boolean isFirstElement = true;
+            for (byte[] row : rows) {
+                if (!isFirstElement) {
+                    bos.put(jsonDelimiter);
+                }
+                bos.put(row);
+                isFirstElement = false;
+            }
+            bos.put("]".getBytes(StandardCharsets.UTF_8));
+            return bos.array();
+        }
+        throw new RuntimeException("Failed to join rows data, unsupported `format` from stream load properties:");
+    }
+    private Map<String, Object> put(String loadUrl, String label, byte[] data) throws IOException {
+        LOG.info(String.format("Executing stream load to: '%s', size: '%s'", loadUrl, data.length));
+        final HttpClientBuilder httpClientBuilder = HttpClients.custom()
+                .setRedirectStrategy(new DefaultRedirectStrategy () {
+                    @Override
+                    protected boolean isRedirectable(String method) {
+                        return true;
+                    }
+                });
+        try ( CloseableHttpClient httpclient = httpClientBuilder.build()) {
+            HttpPut httpPut = new HttpPut(loadUrl);
+            List<String> cols = options.getColumns();
+            if (null != cols && !cols.isEmpty() && Keys.StreamLoadFormat.CSV.equals(options.getStreamLoadFormat())) {
+                httpPut.setHeader("columns", String.join(",", cols.stream().map(f -> String.format("`%s`", f)).collect(Collectors.toList())));
+            }
+            if (null != options.getLoadProps()) {
+                for (Map.Entry<String, Object> entry : options.getLoadProps().entrySet()) {
+                    httpPut.setHeader(entry.getKey(), String.valueOf(entry.getValue()));
+                }
+            }
+            httpPut.setHeader("Expect", "100-continue");
+            httpPut.setHeader("label", label);
+            httpPut.setHeader("Content-Type", "application/x-www-form-urlencoded");
+            httpPut.setHeader("Authorization", getBasicAuthHeader(options.getUsername(), options.getPassword()));
+            httpPut.setEntity(new ByteArrayEntity (data));
+            httpPut.setConfig(RequestConfig.custom().setRedirectsEnabled(true).build());
+            try ( CloseableHttpResponse resp = httpclient.execute(httpPut)) {
+                HttpEntity respEntity = getHttpEntity(resp);
+                if (respEntity == null)
+                    return null;
+                return (Map<String, Object>)JSON.parse(EntityUtils.toString(respEntity));
+            }
+        }
+    }
+
+    private String getBasicAuthHeader(String username, String password) {
+        String auth = username + ":" + password;
+        byte[] encodedAuth = Base64.encodeBase64(auth.getBytes(StandardCharsets.UTF_8));
+        return new StringBuilder("Basic ").append(new String(encodedAuth)).toString();
+    }
+
+    private HttpEntity getHttpEntity(CloseableHttpResponse resp) {
+        int code = resp.getStatusLine().getStatusCode();
+        if (200 != code) {
+            LOG.warn("Request failed with code:{}", code);
+            return null;
+        }
+        HttpEntity respEntity = resp.getEntity();
+        if (null == respEntity) {
+            LOG.warn("Request failed with empty response.");
+            return null;
+        }
+        return respEntity;
+    }
+
+    private String getLoadHost() {
+        List<String> hostList = options.getLoadUrlList();
+        long tmp = pos + hostList.size();
+        for (; pos < tmp; pos++) {
+            String host = new StringBuilder("http://").append(hostList.get((int) (pos % hostList.size()))).toString();
+            if (checkConnection(host)) {
+                return host;
+            }
+        }
+        return null;
+    }
+
+    private boolean checkConnection(String host) {
+        try {
+            URL url = new URL(host);
+            HttpURLConnection co =  (HttpURLConnection) url.openConnection();
+            co.setConnectTimeout(5000);
+            co.connect();
+            co.disconnect();
+            return true;
+        } catch (Exception e1) {
+            e1.printStackTrace();
+            return false;
+        }
+    }
+}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisUtil.java

@@ -0,0 +1,105 @@
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import com.alibaba.datax.plugin.rdbms.util.DBUtil;
+import com.alibaba.datax.plugin.rdbms.util.DataBaseType;
+import com.alibaba.datax.plugin.rdbms.util.RdbmsException;
+import com.alibaba.datax.plugin.rdbms.writer.Constant;
+import com.alibaba.druid.sql.parser.ParserException;
+import com.google.common.base.Strings;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.Statement;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * jdbc util
+ */
+public class DorisUtil {
+    private static final Logger LOG = LoggerFactory.getLogger(DorisUtil.class);
+
+    private DorisUtil() {}
+
+    public static List<String> getDorisTableColumns( Connection conn, String databaseName, String tableName) {
+        String currentSql = String.format("SELECT COLUMN_NAME FROM `information_schema`.`COLUMNS` WHERE `TABLE_SCHEMA` = '%s' AND `TABLE_NAME` = '%s' ORDER BY `ORDINAL_POSITION` ASC;", databaseName, tableName);
+        List<String> columns = new ArrayList<> ();
+        ResultSet rs = null;
+        try {
+            rs = DBUtil.query(conn, currentSql);
+            while (DBUtil.asyncResultSetNext(rs)) {
+                String colName = rs.getString("COLUMN_NAME");
+                columns.add(colName);
+            }
+            return columns;
+        } catch (Exception e) {
+            throw RdbmsException.asQueryException(DataBaseType.MySql, e, currentSql, null, null);
+        } finally {
+            DBUtil.closeDBResources(rs, null, null);
+        }
+    }
+
+    public static List<String> renderPreOrPostSqls(List<String> preOrPostSqls, String tableName) {
+        if (null == preOrPostSqls) {
+            return Collections.emptyList();
+        }
+        List<String> renderedSqls = new ArrayList<>();
+        for (String sql : preOrPostSqls) {
+            if (! Strings.isNullOrEmpty(sql)) {
+                renderedSqls.add(sql.replace(Constant.TABLE_NAME_PLACEHOLDER, tableName));
+            }
+        }
+        return renderedSqls;
+    }
+
+    public static void executeSqls(Connection conn, List<String> sqls) {
+        Statement stmt = null;
+        String currentSql = null;
+        try {
+            stmt = conn.createStatement();
+            for (String sql : sqls) {
+                currentSql = sql;
+                DBUtil.executeSqlWithoutResultSet(stmt, sql);
+            }
+        } catch (Exception e) {
+            throw RdbmsException.asQueryException(DataBaseType.MySql, e, currentSql, null, null);
+        } finally {
+            DBUtil.closeDBResources(null, stmt, null);
+        }
+    }
+
+    public static void preCheckPrePareSQL( Keys options) {
+        String table = options.getTable();
+        List<String> preSqls = options.getPreSqlList();
+        List<String> renderedPreSqls = DorisUtil.renderPreOrPostSqls(preSqls, table);
+        if (null != renderedPreSqls && !renderedPreSqls.isEmpty()) {
+            LOG.info("Begin to preCheck preSqls:[{}].", String.join(";", renderedPreSqls));
+            for (String sql : renderedPreSqls) {
+                try {
+                    DBUtil.sqlValid(sql, DataBaseType.MySql);
+                } catch ( ParserException e) {
+                    throw RdbmsException.asPreSQLParserException(DataBaseType.MySql,e,sql);
+                }
+            }
+        }
+    }
+
+    public static void preCheckPostSQL( Keys options) {
+        String table = options.getTable();
+        List<String> postSqls = options.getPostSqlList();
+        List<String> renderedPostSqls = DorisUtil.renderPreOrPostSqls(postSqls, table);
+        if (null != renderedPostSqls && !renderedPostSqls.isEmpty()) {
+            LOG.info("Begin to preCheck postSqls:[{}].", String.join(";", renderedPostSqls));
+            for(String sql : renderedPostSqls) {
+                try {
+                    DBUtil.sqlValid(sql, DataBaseType.MySql);
+                } catch (ParserException e){
+                    throw RdbmsException.asPostSQLParserException(DataBaseType.MySql,e,sql);
+                }
+            }
+        }
+    }
+}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisWriter.java

@@ -0,0 +1,164 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import com.alibaba.datax.common.element.Record;
+import com.alibaba.datax.common.exception.DataXException;
+import com.alibaba.datax.common.plugin.RecordReceiver;
+import com.alibaba.datax.common.spi.Writer;
+import com.alibaba.datax.common.util.Configuration;
+import com.alibaba.datax.plugin.rdbms.util.DBUtil;
+import com.alibaba.datax.plugin.rdbms.util.DBUtilErrorCode;
+import com.alibaba.datax.plugin.rdbms.util.DataBaseType;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.sql.Connection;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * doris data writer
+ */
+public class DorisWriter extends Writer {
+
+    public static class Job extends Writer.Job {
+
+        private static final Logger LOG = LoggerFactory.getLogger(Job.class);
+        private Configuration originalConfig = null;
+        private Keys options;
+
+        @Override
+        public void init() {
+            this.originalConfig = super.getPluginJobConf();
+            options = new Keys (super.getPluginJobConf());
+            options.doPretreatment();
+        }
+
+        @Override
+        public void preCheck(){
+            this.init();
+            DorisUtil.preCheckPrePareSQL(options);
+            DorisUtil.preCheckPostSQL(options);
+        }
+
+        @Override
+        public void prepare() {
+            String username = options.getUsername();
+            String password = options.getPassword();
+            String jdbcUrl = options.getJdbcUrl();
+            List<String> renderedPreSqls = DorisUtil.renderPreOrPostSqls(options.getPreSqlList(), options.getTable());
+            if (null != renderedPreSqls && !renderedPreSqls.isEmpty()) {
+                Connection conn = DBUtil.getConnection(DataBaseType.MySql, jdbcUrl, username, password);
+                LOG.info("Begin to execute preSqls:[{}]. context info:{}.", String.join(";", renderedPreSqls), jdbcUrl);
+                DorisUtil.executeSqls(conn, renderedPreSqls);
+                DBUtil.closeDBResources(null, null, conn);
+            }
+        }
+
+        @Override
+        public List<Configuration> split(int mandatoryNumber) {
+            List<Configuration> configurations = new ArrayList<>(mandatoryNumber);
+            for (int i = 0; i < mandatoryNumber; i++) {
+                configurations.add(originalConfig);
+            }
+            return configurations;
+        }
+
+        @Override
+        public void post() {
+            String username = options.getUsername();
+            String password = options.getPassword();
+            String jdbcUrl = options.getJdbcUrl();
+            List<String> renderedPostSqls = DorisUtil.renderPreOrPostSqls(options.getPostSqlList(), options.getTable());
+            if (null != renderedPostSqls && !renderedPostSqls.isEmpty()) {
+                Connection conn = DBUtil.getConnection(DataBaseType.MySql, jdbcUrl, username, password);
+                LOG.info("Start to execute preSqls:[{}]. context info:{}.", String.join(";", renderedPostSqls), jdbcUrl);
+                DorisUtil.executeSqls(conn, renderedPostSqls);
+                DBUtil.closeDBResources(null, null, conn);
+            }
+        }
+
+        @Override
+        public void destroy() {
+        }
+
+    }
+
+    public static class Task extends Writer.Task {
+        private DorisWriterManager writerManager;
+        private Keys options;
+        private DorisCodec rowCodec;
+
+        @Override
+        public void init() {
+            options = new Keys (super.getPluginJobConf());
+            if (options.isWildcardColumn()) {
+                Connection conn = DBUtil.getConnection(DataBaseType.MySql, options.getJdbcUrl(), options.getUsername(), options.getPassword());
+                List<String> columns = DorisUtil.getDorisTableColumns(conn, options.getDatabase(), options.getTable());
+                options.setInfoCchemaColumns(columns);
+            }
+            writerManager = new DorisWriterManager(options);
+            rowCodec = DorisCodecFactory.createCodec(options);
+        }
+
+        @Override
+        public void prepare() {
+        }
+
+        public void startWrite(RecordReceiver recordReceiver) {
+            try {
+                Record record;
+                while ((record = recordReceiver.getFromReader()) != null) {
+                    if (record.getColumnNumber() != options.getColumns().size()) {
+                        throw DataXException
+                                .asDataXException(
+                                        DBUtilErrorCode.CONF_ERROR,
+                                        String.format(
+                                                "There is an error in the column configuration information. " +
+                                                "This is because you have configured a task where the number of fields to be read from the source:%s " +
+                                                "is not equal to the number of fields to be written to the destination table:%s. " +
+                                                "Please check your configuration and make changes.",
+                                                record.getColumnNumber(),
+                                                options.getColumns().size()));
+                    }
+                    writerManager.writeRecord(rowCodec.codec(record));
+                }
+            } catch (Exception e) {
+                throw DataXException.asDataXException(DBUtilErrorCode.WRITE_DATA_ERROR, e);
+            }
+        }
+
+        @Override
+        public void post() {
+            try {
+                writerManager.close();
+            } catch (Exception e) {
+                throw DataXException.asDataXException(DBUtilErrorCode.WRITE_DATA_ERROR, e);
+            }
+        }
+
+        @Override
+        public void destroy() {}
+
+        @Override
+        public boolean supportFailOver(){
+            return false;
+        }
+    }
+}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisWriterExcetion.java

@@ -0,0 +1,29 @@
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import java.io.IOException;
+import java.util.Map;
+
+public class DorisWriterExcetion extends IOException {
+
+    private final Map<String, Object> response;
+    private boolean reCreateLabel;
+
+    public DorisWriterExcetion ( String message, Map<String, Object> response) {
+        super(message);
+        this.response = response;
+    }
+
+    public DorisWriterExcetion ( String message, Map<String, Object> response, boolean reCreateLabel) {
+        super(message);
+        this.response = response;
+        this.reCreateLabel = reCreateLabel;
+    }
+
+    public Map<String, Object> getFailedResponse() {
+        return response;
+    }
+
+    public boolean needReCreateLabel() {
+        return reCreateLabel;
+    }
+}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisWriterManager.java

@@ -0,0 +1,192 @@
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import com.google.common.base.Strings;
+import org.apache.commons.lang3.concurrent.BasicThreadFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.Executors;
+import java.util.concurrent.LinkedBlockingDeque;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.TimeUnit;
+
+public class DorisWriterManager {
+
+    private static final Logger LOG = LoggerFactory.getLogger(DorisWriterManager.class);
+
+    private final DorisStreamLoadObserver visitor;
+    private final Keys options;
+    private final List<byte[]> buffer = new ArrayList<> ();
+    private int batchCount = 0;
+    private long batchSize = 0;
+    private volatile boolean closed = false;
+    private volatile Exception flushException;
+    private final LinkedBlockingDeque< WriterTuple > flushQueue;
+    private ScheduledExecutorService scheduler;
+    private ScheduledFuture<?> scheduledFuture;
+
+    public DorisWriterManager( Keys options) {
+        this.options = options;
+        this.visitor = new DorisStreamLoadObserver (options);
+        flushQueue = new LinkedBlockingDeque<>(options.getFlushQueueLength());
+        this.startScheduler();
+        this.startAsyncFlushing();
+    }
+
+    public void startScheduler() {
+        stopScheduler();
+        this.scheduler = Executors.newScheduledThreadPool(1, new BasicThreadFactory.Builder().namingPattern("Doris-interval-flush").daemon(true).build());
+        this.scheduledFuture = this.scheduler.schedule(() -> {
+            synchronized (DorisWriterManager.this) {
+                if (!closed) {
+                    try {
+                        String label = createBatchLabel();
+                        LOG.info(String.format("Doris interval Sinking triggered: label[%s].", label));
+                        if (batchCount == 0) {
+                            startScheduler();
+                        }
+                        flush(label, false);
+                    } catch (Exception e) {
+                        flushException = e;
+                    }
+                }
+            }
+        }, options.getFlushInterval(), TimeUnit.MILLISECONDS);
+    }
+
+    public void stopScheduler() {
+        if (this.scheduledFuture != null) {
+            scheduledFuture.cancel(false);
+            this.scheduler.shutdown();
+        }
+    }
+
+    public final synchronized void writeRecord(String record) throws IOException {
+        checkFlushException();
+        try {
+            byte[] bts = record.getBytes(StandardCharsets.UTF_8);
+            buffer.add(bts);
+            batchCount++;
+            batchSize += bts.length;
+            if (batchCount >= options.getBatchRows() || batchSize >= options.getBatchSize()) {
+                String label = createBatchLabel();
+                LOG.debug(String.format("Doris buffer Sinking triggered: rows[%d] label[%s].", batchCount, label));
+                flush(label, false);
+            }
+        } catch (Exception e) {
+            throw new IOException("Writing records to Doris failed.", e);
+        }
+    }
+
+    public synchronized void flush(String label, boolean waitUtilDone) throws Exception {
+        checkFlushException();
+        if (batchCount == 0) {
+            if (waitUtilDone) {
+                waitAsyncFlushingDone();
+            }
+            return;
+        }
+        flushQueue.put(new WriterTuple (label, batchSize,  new ArrayList<>(buffer)));
+        if (waitUtilDone) {
+            // wait the last flush
+            waitAsyncFlushingDone();
+        }
+        buffer.clear();
+        batchCount = 0;
+        batchSize = 0;
+    }
+
+    public synchronized void close() {
+        if (!closed) {
+            closed = true;
+            try {
+                String label = createBatchLabel();
+                if (batchCount > 0) LOG.debug(String.format("Doris Sink is about to close: label[%s].", label));
+                flush(label, true);
+            } catch (Exception e) {
+                throw new RuntimeException("Writing records to Doris failed.", e);
+            }
+        }
+        checkFlushException();
+    }
+
+    public String createBatchLabel() {
+        StringBuilder sb = new StringBuilder();
+        if (! Strings.isNullOrEmpty(options.getLabelPrefix())) {
+            sb.append(options.getLabelPrefix());
+        }
+        return sb.append(UUID.randomUUID().toString())
+                .toString();
+    }
+
+    private void startAsyncFlushing() {
+        // start flush thread
+        Thread flushThread = new Thread(new Runnable(){
+            public void run() {
+                while(true) {
+                    try {
+                        asyncFlush();
+                    } catch (Exception e) {
+                        flushException = e;
+                    }
+                }
+            }
+        });
+        flushThread.setDaemon(true);
+        flushThread.start();
+    }
+
+    private void waitAsyncFlushingDone() throws InterruptedException {
+        // wait previous flushings
+        for (int i = 0; i <= options.getFlushQueueLength(); i++) {
+            flushQueue.put(new WriterTuple ("", 0l, null));
+        }
+        checkFlushException();
+    }
+
+    private void asyncFlush() throws Exception {
+        WriterTuple flushData = flushQueue.take();
+        if (Strings.isNullOrEmpty(flushData.getLabel())) {
+            return;
+        }
+        stopScheduler();
+        LOG.debug(String.format("Async stream load: rows[%d] bytes[%d] label[%s].", flushData.getRows().size(), flushData.getBytes(), flushData.getLabel()));
+        for (int i = 0; i <= options.getMaxRetries(); i++) {
+            try {
+                // flush to Doris with stream load
+                visitor.streamLoad(flushData);
+                LOG.info(String.format("Async stream load finished: label[%s].", flushData.getLabel()));
+                startScheduler();
+                break;
+            } catch (Exception e) {
+                LOG.warn("Failed to flush batch data to Doris, retry times = {}", i, e);
+                if (i >= options.getMaxRetries()) {
+                    throw new IOException(e);
+                }
+                if (e instanceof DorisWriterExcetion && (( DorisWriterExcetion )e).needReCreateLabel()) {
+                    String newLabel = createBatchLabel();
+                    LOG.warn(String.format("Batch label changed from [%s] to [%s]", flushData.getLabel(), newLabel));
+                    flushData.setLabel(newLabel);
+                }
+                try {
+                    Thread.sleep(1000l * Math.min(i + 1, 10));
+                } catch (InterruptedException ex) {
+                    Thread.currentThread().interrupt();
+                    throw new IOException("Unable to flush, interrupted while doing another attempt", e);
+                }
+            }
+        }
+    }
+
+    private void checkFlushException() {
+        if (flushException != null) {
+            throw new RuntimeException("Writing records to Doris failed.", flushException);
+        }
+    }
+}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/Keys.java

@@ -0,0 +1,177 @@
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import com.alibaba.datax.common.exception.DataXException;
+import com.alibaba.datax.common.util.Configuration;
+import com.alibaba.datax.plugin.rdbms.util.DBUtilErrorCode;
+
+import java.io.Serializable;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+public class Keys implements Serializable {
+
+    private static final long serialVersionUID = 1l;
+    private static final int MAX_RETRIES = 3;
+    private static final int BATCH_ROWS = 500000;
+    private static final long DEFAULT_FLUSH_INTERVAL = 30000;
+
+    private static final String LOAD_PROPS_FORMAT = "format";
+    public enum StreamLoadFormat {
+        CSV, JSON;
+    }
+
+    private static final String USERNAME = "username";
+    private static final String PASSWORD = "password";
+    private static final String DATABASE = "connection[0].selectedDatabase";
+    private static final String TABLE = "connection[0].table[0]";
+    private static final String COLUMN = "column";
+    private static final String PRE_SQL = "preSql";
+    private static final String POST_SQL = "postSql";
+    private static final String JDBC_URL = "connection[0].jdbcUrl";
+    private static final String LABEL_PREFIX = "labelPrefix";
+    private static final String MAX_BATCH_ROWS = "maxBatchRows";
+    private static final String MAX_BATCH_SIZE = "maxBatchSize";
+    private static final String FLUSH_INTERVAL = "flushInterval";
+    private static final String LOAD_URL = "loadUrl";
+    private static final String FLUSH_QUEUE_LENGTH = "flushQueueLength";
+    private static final String LOAD_PROPS = "loadProps";
+
+    private static final String DEFAULT_LABEL_PREFIX = "datax_doris_writer_";
+
+    private static final long DEFAULT_MAX_BATCH_SIZE = 90 * 1024 * 1024; //default 90M
+
+    private final Configuration options;
+
+    private List<String> infoSchemaColumns;
+    private List<String> userSetColumns;
+    private boolean isWildcardColumn;
+
+    public Keys ( Configuration options) {
+        this.options = options;
+        this.userSetColumns = options.getList(COLUMN, String.class).stream().map(str -> str.replace("`", "")).collect(Collectors.toList());
+        if (1 == options.getList(COLUMN, String.class).size() && "*".trim().equals(options.getList(COLUMN, String.class).get(0))) {
+            this.isWildcardColumn = true;
+        }
+    }
+
+    public void doPretreatment() {
+        validateRequired();
+        validateStreamLoadUrl();
+    }
+
+    public String getJdbcUrl() {
+        return options.getString(JDBC_URL);
+    }
+
+    public String getDatabase() {
+        return options.getString(DATABASE);
+    }
+
+    public String getTable() {
+        return options.getString(TABLE);
+    }
+
+    public String getUsername() {
+        return options.getString(USERNAME);
+    }
+
+    public String getPassword() {
+        return options.getString(PASSWORD);
+    }
+
+    public String getLabelPrefix() {
+        String label = options.getString(LABEL_PREFIX);
+        return null == label ? DEFAULT_LABEL_PREFIX : label;
+    }
+
+    public List<String> getLoadUrlList() {
+        return options.getList(LOAD_URL, String.class);
+    }
+
+    public List<String> getColumns() {
+        if (isWildcardColumn) {
+            return this.infoSchemaColumns;
+        }
+        return this.userSetColumns;
+    }
+
+    public boolean isWildcardColumn() {
+        return this.isWildcardColumn;
+    }
+
+    public void setInfoCchemaColumns(List<String> cols) {
+        this.infoSchemaColumns = cols;
+    }
+
+    public List<String> getPreSqlList() {
+        return options.getList(PRE_SQL, String.class);
+    }
+
+    public List<String> getPostSqlList() {
+        return options.getList(POST_SQL, String.class);
+    }
+
+    public Map<String, Object> getLoadProps() {
+        return options.getMap(LOAD_PROPS);
+    }
+
+    public int getMaxRetries() {
+        return MAX_RETRIES;
+    }
+
+    public int getBatchRows() {
+        Integer rows = options.getInt(MAX_BATCH_ROWS);
+        return null == rows ? BATCH_ROWS : rows;
+    }
+
+    public long getBatchSize() {
+        Long size = options.getLong(MAX_BATCH_SIZE);
+        return null == size ? DEFAULT_MAX_BATCH_SIZE : size;
+    }
+
+    public long getFlushInterval() {
+        Long interval = options.getLong(FLUSH_INTERVAL);
+        return null == interval ? DEFAULT_FLUSH_INTERVAL : interval;
+    }
+
+    public int getFlushQueueLength() {
+        Integer len = options.getInt(FLUSH_QUEUE_LENGTH);
+        return null == len ? 1 : len;
+    }
+
+    public StreamLoadFormat getStreamLoadFormat() {
+        Map<String, Object> loadProps = getLoadProps();
+        if (null == loadProps) {
+            return StreamLoadFormat.CSV;
+        }
+        if (loadProps.containsKey(LOAD_PROPS_FORMAT)
+                && StreamLoadFormat.JSON.name().equalsIgnoreCase(String.valueOf(loadProps.get(LOAD_PROPS_FORMAT)))) {
+            return StreamLoadFormat.JSON;
+        }
+        return StreamLoadFormat.CSV;
+    }
+
+    private void validateStreamLoadUrl() {
+        List<String> urlList = getLoadUrlList();
+        for (String host : urlList) {
+            if (host.split(":").length < 2) {
+                throw DataXException.asDataXException(DBUtilErrorCode.CONF_ERROR,
+                        "The format of loadUrl is not correct, please enter:[`fe_ip:fe_http_ip;fe_ip:fe_http_ip`].");
+            }
+        }
+    }
+
+    private void validateRequired() {
+        final String[] requiredOptionKeys = new String[]{
+                USERNAME,
+                DATABASE,
+                TABLE,
+                COLUMN,
+                LOAD_URL
+        };
+        for (String optionKey : requiredOptionKeys) {
+            options.getNecessaryValue(optionKey, DBUtilErrorCode.REQUIRED_VALUE);
+        }
+    }
+}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/WriterTuple.java

@@ -0,0 +1,20 @@
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import java.util.List;
+
+public class WriterTuple {
+    private String label;
+    private Long bytes;
+    private List<byte[]> rows;
+
+    public WriterTuple ( String label, Long bytes, List<byte[]> rows){
+        this.label = label;
+        this.rows = rows;
+        this.bytes = bytes;
+    }
+
+    public String getLabel() { return label; }
+    public void setLabel(String label) { this.label = label; }
+    public Long getBytes() { return bytes; }
+    public List<byte[]> getRows() { return rows; }
+}

doriswriter/src/main/resources/plugin.json

@@ -0,0 +1,6 @@
+{
+  "name": "doriswriter",
+  "class": "com.alibaba.datax.plugin.writer.doriswriter.DorisWriter",
+  "description": "apache doris writer plugin",
+  "developer": "apche doris"
+}

doriswriter/src/main/resources/plugin_job_template.json

@@ -0,0 +1,20 @@
+{
+  "name": "doriswriter",
+  "parameter": {
+    "username": "",
+    "password": "",
+    "column": [],
+    "preSql": [],
+    "postSql": [],
+    "beLoadUrl": [],
+    "loadUrl": [],
+    "loadProps": {},
+    "connection": [
+      {
+        "jdbcUrl": "",
+        "selectedDatabase": "",
+        "table": []
+      }
+    ]
+  }
+}

doriswriter/src/test/java/com/alibaba/datax/plugin/writer/doriswriter/TestDorisWriterLoad.java

@@ -0,0 +1,88 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import com.alibaba.fastjson.JSON;
+import com.google.common.collect.Maps;
+import com.alibaba.datax.common.util.Configuration;
+
+import java.io.IOException;
+import java.util.Map;
+
+public class TestDorisWriterLoad {
+
+
+    // for test
+    public static void main(String[] args) throws IOException {
+        /**
+         * 下面示例使用的建表语句，要首先有一套Ddoris的环境，创建数据库demo，然后使用下面的建表语句创建表
+         * 修改feLoadUrl中的IP地址，username，password，然后运行
+         * CREATE TABLE `doris_test` (
+         *   `k1` varchar(30) NULL ,
+         *   `k2` varchar(255) NULL,
+         *   `k3` varchar(200)
+         * ) ENGINE=OLAP
+         * Duplicate KEY(k1)
+         * COMMENT "OLAP"
+         * DISTRIBUTED BY HASH(k1) BUCKETS 1
+         * PROPERTIES (
+         * "replication_allocation" = "tag.location.default: 1",
+         * "in_memory" = "false",
+         * "storage_format" = "V2"
+         * )
+         */
+        String json = "{\n" +
+                "   \"feLoadUrl\": [\"127.0.0.1:8030\"],\n" +
+                "   \"column\": [\"k1\", \"k2\", \"k3\"],\n" +
+                "   \"database\": \"demo\",\n" +
+                "   \"jdbcUrl\": \"\",\n" +
+                "   \"loadProps\": {},\n" +
+                "   \"password\": \"12345\",\n" +
+                "   \"postSql\": [],\n" +
+                "   \"preSql\": [],\n" +
+                "   \"table\": \"doris_test\",\n" +
+                "   \"username\": \"root\"\n" +
+                "}";
+        Configuration configuration = Configuration.from(json);
+        Key key = new Key(configuration);
+
+        DorisWriterEmitter emitter = new DorisWriterEmitter(key);
+        DorisFlushBatch flushBatch = new DorisFlushBatch("\n","csv");
+        flushBatch.setLabel("test4");
+        Map<String, String> row1 = Maps.newHashMap();
+        row1.put("k1", "2021-02-02");
+        row1.put("k2", "2021-02-02 00:00:00");
+        row1.put("k3", "3");
+        String rowStr1 = JSON.toJSONString(row1);
+        System.out.println("rows1: " + rowStr1);
+        flushBatch.putData(rowStr1);
+
+        Map<String, String> row2 = Maps.newHashMap();
+        row2.put("k1", "2021-02-03");
+        row2.put("k2", "2021-02-03 00:00:00");
+        row2.put("k3", "4");
+        String rowStr2 = JSON.toJSONString(row2);
+        System.out.println("rows2: " + rowStr2);
+        flushBatch.putData(rowStr2);
+
+        for (int i = 0; i < 50000; ++i) {
+            flushBatch.putData(rowStr2);
+        }
+        emitter.emit (flushBatch);
+    }
+}

package.xml

@@ -266,6 +266,13 @@
             </includes>
             <outputDirectory>datax</outputDirectory>
         </fileSet>
+        <fileSet>
+            <directory>doriswriter/target/datax/</directory>
+            <includes>
+                <include>**/*.*</include>
+            </includes>
+            <outputDirectory>datax</outputDirectory>
+        </fileSet>
         <fileSet>
             <directory>txtfilewriter/target/datax/</directory>
             <includes>

pom.xml

@@ -101,7 +101,6 @@
         <module>hbase11xwriter</module>
         <module>hbase094xwriter</module>
         <module>hbase11xsqlwriter</module>
-        <module>hbase20xsqlwriter</module>
         <module>kuduwriter</module>
         <module>ftpwriter</module>
         <module>hdfswriter</module>
@@ -123,6 +122,10 @@
         <!-- common support module -->
         <module>plugin-rdbms-util</module>
         <module>plugin-unstructured-storage-util</module>
+        <module>hbase20xsqlreader</module>
+        <module>hbase20xsqlwriter</module>
+        <module>kuduwriter</module>
+        <module>doriswriter</module>
     </modules>
 
     <dependencyManagement>