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Posted to mapreduce-issues@hadoop.apache.org by "Junping Du (JIRA)" <ji...@apache.org> on 2015/08/19 02:08:46 UTC

[jira] [Updated] (MAPREDUCE-6454) MapReduce doesn't set the HADOOP_CLASSPATH for jar lib in distributed cache.

     [ https://issues.apache.org/jira/browse/MAPREDUCE-6454?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Junping Du updated MAPREDUCE-6454:
----------------------------------
    Attachment: MAPREDUCE-6454.patch

MRApps already include files in distributed cache when adding them to classpath env of MRApps. However, "jar"s are excluded for some reason (seems not valid now). In this patch, we add it back.

> 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
>         Attachments: 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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