Question

我正在Sqoop 1.4.3使用hadoop 1.2.4和hive 0.11.0

当我尝试进行sqoop导入时：它会抛出IncompatibleClassChangeError.

任何有关修复此问题的建议......

使用了Sqoop cmd：

sqoop import --connect jdbc:mysql://localhost:3306/employees \
    --username test --password test

跟踪：

Exception in thread "main" java.lang.IncompatibleClassChangeError: Found class org.apache.hadoop.mapreduce.JobContext, but interface was expected
        at org.apache.sqoop.config.ConfigurationHelper.getJobNumMaps(ConfigurationHelper.java:53)
        at com.cloudera.sqoop.config.ConfigurationHelper.getJobNumMaps(ConfigurationHelper.java:36)
        at org.apache.sqoop.mapreduce.db.DataDrivenDBInputFormat.getSplits(DataDrivenDBInputFormat.java:121)
        at org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:1054)
        at org.apache.hadoop.mapred.JobClient.writeSplits(JobClient.java:1071)
        at org.apache.hadoop.mapred.JobClient.access$700(JobClient.java:179)
        at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:983)
        at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:936)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)
        at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:936)
        at org.apache.hadoop.mapreduce.Job.submit(Job.java:550)
        at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:580)
        at org.apache.sqoop.mapreduce.ImportJobBase.doSubmitJob(ImportJobBase.java:173)
        at org.apache.sqoop.mapreduce.ImportJobBase.runJob(ImportJobBase.java:151)
        at org.apache.sqoop.mapreduce.ImportJobBase.runImport(ImportJobBase.java:221)
        at org.apache.sqoop.manager.SqlManager.importTable(SqlManager.java:545)
        at org.apache.sqoop.manager.MySQLManager.importTable(MySQLManager.java:111)
        at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:403)
        at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:476)
        at org.apache.sqoop.Sqoop.run(Sqoop.java:145)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:181)
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:220)
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:229)
        at org.apache.sqoop.Sqoop.main(Sqoop.java:238)

任何人都可以建议我们可以配置哪个版本的Sqoop让这个工作..？

Answer 1

您遇到版本冲突，很可能您正在Hadoop 2.0上运行在Hadoop 1.0上编译的代码。这是因为Hadoop 1.0和2.0大多不兼容，所以你应该确保下载与你的Hadoop发行版匹配的Sqoop版本。

有关详细信息，请查看here。

Sqoop导入问题 - java.lang.IncompatibleClassChangeError：找到类org.apache.hadoop.mapreduce.JobContext，但接口是预期的

1 个答案: