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https://issues.apache.org/jira/browse/MAPREDUCE-5184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13652558#comment-13652558
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Zhijie Shen commented on MAPREDUCE-5184:
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In the document, it is worth mentioning that since hadoop-examples-2.x.jar is
the classpath, "hadoop -jar hadoop-examples-1.x.jar"is still using the 2.x jar.
Users should either remove 2.x jar from the classpath or set
HADOOP_USER_CLASSPATH_FIRST=true and
HADOOP_CLASSPATH=...:hadoop-examples-1.x.jar to run 1.x jar actually.
> Document MR Binary Compatibility vis-a-vis hadoop-1 and hadoop-2
> ----------------------------------------------------------------
>
> Key: MAPREDUCE-5184
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5184
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: documentation
> Reporter: Arun C Murthy
> Assignee: Arun C Murthy
> Fix For: 2.0.5-beta
>
>
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