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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-3080) Remove flush calls from JobHistory
Date Tue, 25 Mar 2008 10:41:25 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3080?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Devaraj Das updated HADOOP-3080:
--------------------------------

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

I just committed this. Thanks, Amareshwari!

> Remove flush calls from JobHistory
> ----------------------------------
>
>                 Key: HADOOP-3080
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3080
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.17.0
>            Reporter: Devaraj Das
>            Assignee: Amareshwari Sriramadasu
>            Priority: Blocker
>             Fix For: 0.17.0
>
>         Attachments: patch-3080.txt
>
>
> The flush calls from JobHistory should be removed. This has performance impact when lots
of events are being logged to the history files since the JT lock (e.g. lostTracker where
the tracker had ran a lot of tasks, and we call failedTask in a loop, etc.)

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