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https://issues.apache.org/jira/browse/MAPREDUCE-6454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15449169#comment-15449169
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Allen Wittenauer commented on MAPREDUCE-6454:
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This patch makes a huge assumption about the shell scripts that is no longer
true in trunk (and my attempts to teach bash in this jira failed). In the end,
users who use hadoop, hdfs, yarn, and mapred commands in their code will
discover they don't have distributed cache jars in their classpath.
> MapReduce doesn't set the HADOOP_CLASSPATH for jar lib in distributed cache.
> ----------------------------------------------------------------------------
>
> Key: MAPREDUCE-6454
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6454
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Junping Du
> Assignee: Junping Du
> Priority: Critical
> Fix For: 2.7.2, 2.6.2
>
> Attachments: MAPREDUCE-6454-v2.1.patch, MAPREDUCE-6454-v2.patch,
> MAPREDUCE-6454-v3.1.patch, MAPREDUCE-6454-v3.patch, MAPREDUCE-6454.patch
>
>
> We already set lib jars on distributed-cache to CLASSPATH. However, in some
> corner cases (like: MR local mode, Hive Map side local join, etc.), we need
> these jars on HADOOP_CLASSPATH so hadoop scripts can take it in launching
> runjar process.
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