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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-4305) repeatedly blacklisted tasktrackers should get declared dead
Date Mon, 17 Nov 2008 09:18:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-4305?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amareshwari Sriramadasu updated HADOOP-4305:
--------------------------------------------

    Attachment: patch-4305-0.18.txt

Christian, here is a patch for 0.18. Can you validate the patch on your cluster?

> repeatedly blacklisted tasktrackers should get declared dead
> ------------------------------------------------------------
>
>                 Key: HADOOP-4305
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4305
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: Christian Kunz
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 0.20.0
>
>         Attachments: patch-4305-0.18.txt, patch-4305-1.txt
>
>
> When running a batch of jobs it often happens that the same tasktrackers are blacklisted
again and again. This can slow job execution considerably, in particular, when tasks fail
because of timeout.
> It would make sense to no longer assign any tasks to such tasktrackers and to declare
them dead.

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