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https://issues.apache.org/jira/browse/HADOOP-5846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12709763#action_12709763
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Devaraj Das commented on HADOOP-5846:
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Ideally we should implement a queue where we dump the history data and a thread
that processes that queue asynchronously. But that could be done in a later
jira. This jira is meant to help Chukwa folks make better sense out of the
history data.
> Log job history events to a common dump file
> --------------------------------------------
>
> Key: HADOOP-5846
> URL: https://issues.apache.org/jira/browse/HADOOP-5846
> Project: Hadoop Core
> Issue Type: New Feature
> Components: mapred
> Reporter: Amar Kamat
> Assignee: Amar Kamat
>
> As of today all the jobhistory events are logged to separate files. It would
> be nice to also dump all this info into a common file so that external tools
> (e.g Chukwa) can harvest history info. Job configuration should also be
> dumped. Whether to use a same log file for history dumps and configuration
> dumps should be configurable (by default everything goes to one file).
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