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From "Jerome Boulon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CHUKWA-192) Chukwa instrumentation slows down JobTracker operations
Date Wed, 13 May 2009 22:20:45 GMT

    [ https://issues.apache.org/jira/browse/CHUKWA-192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12709160#action_12709160
] 

Jerome Boulon commented on CHUKWA-192:
--------------------------------------

Hadoop team is working on writing a secondary copy of the data using log4j

> Chukwa instrumentation slows down JobTracker operations
> -------------------------------------------------------
>
>                 Key: CHUKWA-192
>                 URL: https://issues.apache.org/jira/browse/CHUKWA-192
>             Project: Hadoop Chukwa
>          Issue Type: Bug
>            Reporter: Mac Yang
>            Assignee: Jerome Boulon
>
> The current JobTracker instrumentation class holds a lock on JobTracker while it waits
for the JobHistory lock and this causes slow down of JobTracker operations.

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