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From "Patrick Hunt (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-8393) hadoop-config.sh missing variable exports, causes Yarn jobs to fail with ClassNotFoundException MRAppMaster
Date Fri, 11 May 2012 19:24:49 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-8393?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Patrick Hunt updated HADOOP-8393:
---------------------------------

    Status: Patch Available  (was: Open)
    
> hadoop-config.sh missing variable exports, causes Yarn jobs to fail with ClassNotFoundException
MRAppMaster
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-8393
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8393
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: scripts
>            Reporter: Patrick Hunt
>            Assignee: Patrick Hunt
>         Attachments: HADOOP-8393.patch
>
>
> If you start a pseudo distributed yarn using "start-yarn.sh" you need to specify exports
for HADOOP_COMMON_HOME, HADOOP_HDFS_HOME, YARN_HOME, YARN_CONF_DIR, and HADOOP_MAPRED_HOME
in hadoop-env.sh (or elsewhere), otherwise the spawned node manager will be missing these
in it's environment. This is due to start-yarn using yarn-daemons. With this fix it's possible
to start yarn (etc...) with only HADOOP_CONF_DIR specified in the environment. Took some time
to track down this failure, so seems worthwhile to fix.

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