DolphinScheduler+Sqoop 入门避坑：一文搞定数据同步常见异常

在DolphinScheduler中假如遇到创建租户时，报错，错误日志显示权限不足：

可以使用下面的语句去开启权限：

bash 复制代码

hdfs dfs -chmod 777 /

遇见下面的错误

检查 DolphinScheduler 如何整合 Sqoop 呢？

按照上边的图片里的路径和文档在最后边添加下边的代码：

bash 复制代码

export SQOOP_HOME=/opt/installs/sqoop

export PATH=$SQOOP_HOME/bin:$HADOOP_HOME/bin:$SPARK_HOME1/bin:$SPARK_HOME2/bin:$PYTHON_HOME/bin:$JAVA_HOME/bin:$HIVE_HOME/bin:$FLINK_HOME/bin:$DATAX_HOME/bin:$SEATUNNEL_HOME/bin:$CHUNJUN_HOME/bin:$PATH

然后重启一下DolphinScheduler：

vbscript 复制代码

查看ds状态：bash ./bin/dolphinscheduler-daemon.sh status standalone-server

关闭ds：bash ./bin/dolphinscheduler-daemon.sh stop standalone-server

开启ds：bash ./bin/dolphinscheduler-daemon.sh start standalone-server

若出现下边的错误

css 复制代码

    Caused by: java.lang.ClassNotFoundException: Class QueryResult not found
        at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2571)
        at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2665)
        ... 12 more

解决方案就是：拷贝一个 QueryResult.jar 到 sqoop 的 lib 下【临时解决方案】

bash 复制代码

[INFO] 2024-09-25 06:19:16.083 +0000 -  -> 注: /tmp/sqoop-root/compile/46c0c4b3def5aba0c202ae9664234de6/QueryResult.java使用或覆盖了已过时的 API。
    注: 有关详细信息, 请使用 -Xlint:deprecation 重新编译。
    
通过日志看到一个位置：
cd /tmp/sqoop-root/compile/46c0c4b3def5aba0c202ae9664234de6

bash 复制代码

将此jar包拷贝
cp /tmp/sqoop-root/compile/46c0c4b3def5aba0c202ae9664234de6/QueryResult.jar  /opt/installs/sqoop/lib/

永久解决方案：

在 DolphinScheduler的配置文件中添加一句话：

在文档的最下边添加下边的代码

javascript 复制代码

 export HADOOP_CONF_DIR=/opt/installs/hadoop/etc/hadoop

配置完成后，重启 DolphinScheduler。

vbscript 复制代码

查看ds状态：bash ./bin/dolphinscheduler-daemon.sh status standalone-server

关闭ds：bash ./bin/dolphinscheduler-daemon.sh stop standalone-server

开启ds：bash ./bin/dolphinscheduler-daemon.sh start standalone-server

报错如下：

less 复制代码

[INFO] 2024-09-25 06:27:53.628 +0000 -  -> 2024-09-25 14:27:52,757 INFO  [main] sqoop.Sqoop (Sqoop.java:<init>(96)) - Running Sqoop version: 1.4.7
	2024-09-25 14:27:52,824 ERROR [main] tool.BaseSqoopTool (BaseSqoopTool.java:hasUnrecognizedArgs(333)) - Error parsing arguments for import:
	2024-09-25 14:27:52,825 ERROR [main] tool.BaseSqoopTool (BaseSqoopTool.java:hasUnrecognizedArgs(336)) - Unrecognized argument: dt
	2024-09-25 14:27:52,829 ERROR [main] tool.BaseSqoopTool (BaseSqoopTool.java:hasUnrecognizedArgs(336)) - Unrecognized argument: 2024-09-24
	2024-09-25 14:27:52,829 ERROR [main] tool.BaseSqoopTool (BaseSqoopTool.java:hasUnrecognizedArgs(336)) - Unrecognized argument: -m
	2024-09-25 14:27:52,829 ERROR [main] tool.BaseSqoopTool (BaseSqoopTool.java:hasUnrecognizedArgs(336)) - Unrecognized argument: 1
	2024-09-25 14:27:52,829 ERROR [main] tool.BaseSqoopTool (BaseSqoopTool.java:hasUnrecognizedArgs(336)) - Unrecognized argument: --connect
	2024-09-25 14:27:52,829 ERROR [main] tool.BaseSqoopTool (BaseSqoopTool.java:hasUnrecognizedArgs(336)) - Unrecognized argument: jdbc:mysql://192.168.233.131:3306/jrxd?allowLoadLocalInfile=false&autoDeserialize=false&allowLocalInfile=false&allowUrlInLocalInfile=false
	2024-09-25 14:27:52,830 ERROR [main] tool.BaseSqoopTool (BaseSqoopTool.java:hasUnrecognizedArgs(336)) - Unrecognized argument: --username
	2024-09-25 14:27:52,830 ERROR [main] tool.BaseSqoopTool (BaseSqoopTool.java:hasUnrecognizedArgs(336)) - Unrecognized argument: root
	2024-09-25 14:27:52,830 ERROR [main] tool.BaseSqoopTool (BaseSqoopTool.java:hasUnrecognizedArgs(336)) - Unrecognized argument: --password

通过以上可以大概猜到，是 sqoop 命令写错了。

出现这个错误说明是 DolphinScheduler 工作流中的sqoop 语句出错了。

csharp 复制代码

[INFO] 2024-09-25 06:34:34.639 +0000 -  -> 2024-09-25 14:34:33,636 INFO  [main] sqoop.Sqoop (Sqoop.java:<init>(96)) - Running Sqoop version: 1.4.7
    2024-09-25 14:34:33,674 WARN  [main] tool.BaseSqoopTool (BaseSqoopTool.java:applyCredentialsOptions(1120)) - Setting your password on the command-line is insecure. Consider using -P instead.
    Must specify destination with --target-dir. 
    Try --help for usage instructions.
[INFO] 2024-09-25 06:34:34.640 +0000 - FINALIZE_SESSION

再出现错误，则按照下边的格式进行修改：

如果出现以下语法错误：

ini 复制代码

     2024-09-25 14:36:53,044 ERROR [main] manager.SqlManager (LoggingUtils.java:logAll(43)) - Error executing statement: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '%Y-%m-%d) = 2024-09-24 AND  (1 = 0)' at line 1
    java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '%Y-%m-%d) = 2024-09-24 AND  (1 = 0)' at line 1
        at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:120)

则应该将双引号变单引号。

如果出现以下错误：

php 复制代码

Caused by: org.apache.hive.service.cli.HiveSQLException: Error while compiling statement: FAILED: ParseException line 45:21 cannot recognize input near ';' '<EOF>' '<EOF>' in expression specification
    at org.apache.hive.service.cli.operation.Operation.toSQLException(Operation.java:335)
    at org.apache.hive.service.cli.operation.SQLOperation.prepare(SQLOperation.java:199)

解决方式：使用 sql 模块，不要添加分号；。

原文链接：blog.csdn.net/m0_51350088...

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