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From "Sameer Paranjpye (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-99) task trackers can only be assigned one task every heartbeat
Date Mon, 01 May 2006 20:22:48 GMT
     [ http://issues.apache.org/jira/browse/HADOOP-99?page=all ]

Sameer Paranjpye updated HADOOP-99:

    Fix Version: 0.3
      Assign To: Owen O'Malley

> task trackers can only be assigned one task every heartbeat
> -----------------------------------------------------------
>          Key: HADOOP-99
>          URL: http://issues.apache.org/jira/browse/HADOOP-99
>      Project: Hadoop
>         Type: Bug

>   Components: mapred
>     Versions: 0.1.0
>     Reporter: Owen O'Malley
>     Assignee: Owen O'Malley
>      Fix For: 0.3

> Task trackers only call pollForNewTask once per a heartbeat (10 seconds) rather than
when a task finishes. Especially for quick maps this means that the cluster is under utilized,
because each map finishes in a cycle and the task tracker never gets a second, third or fourth
task to run.

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