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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Reopened: (HADOOP-1446) Metrics from the TaskTracker are updated only when map/reduce tasks start/end/fail
Date Thu, 31 May 2007 19:01:24 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1446?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Devaraj Das reopened HADOOP-1446:
---------------------------------


HADOOP-1238 and this issue address different things. Note that here I stress on the thing
that metrics reporting should happen periodically as opposed to only happening during task
execution start/end boundaries.

> Metrics from the TaskTracker are updated only when map/reduce tasks start/end/fail
> ----------------------------------------------------------------------------------
>
>                 Key: HADOOP-1446
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1446
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.12.3
>            Reporter: Devaraj Das
>            Assignee: Devaraj Das
>             Fix For: 0.14.0
>
>
> Metrics reporting from the TaskTracker for the maps_running and reduces_running metrics
are done only when a task is starting up or finishing up. This is wrong and the metrics reporting
should be done periodically during the life of the TaskTracker just as it is done for the
JobTracker case.

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