本篇内容介绍了“sqoop版本不兼容的解决方法”的有关知识,在实际案例的操作过程中,不少人都会遇到这样的困境,接下来就让小编带领大家学习一下如何处理这些情况吧!希望大家仔细阅读,能够学有所成!
错误: 版本不兼容
Exception in thread "main" java.lang.IncompatibleClassChangeError:
Found class org.apache.hadoop.mapreduce.JobContext, but interface was expected
at org.apache.sqoop.mapreduce.ExportOutputFormat.checkOutputSpecs(ExportOutputFormat.java:57)
at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:887)
at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:)850
at java.security.AccessController.doPrivileged(Native Method)
....
解决办法:
this exception is very typical when someone is messing together incompatible hadoop binaries and applications (for example sqoop compiled for hadoop 2 running on hadoop 1). Would you mind checking that you've downloaded appropriate binary distribution for your cluster? You have to use binary artifact sqoop-1.4.2.bin__hadoop-1.0.0.tar.gz for hadoop 1.0.3.
如何编译呢 ?
参考:http://my.oschina.net/AlbertHa/blog/318551
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