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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-3245) Provide ability to persist running jobs (extend HADOOP-1876)
Date Thu, 04 Sep 2008 22:33:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3245?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amar Kamat updated HADOOP-3245:
-------------------------------

    Attachment: HADOOP-3245-v5.35.3-no-log.patch

Attaching a patch that incorporates Devaraj's comments. Following are the changes :
1) Listener is now stateless and inline. Tasks that are created but not finished are killed
using {{ExpiryLaunchingTasks}} thread.
2) Counters are also logged as part of a successful attempt. This helps in making the listener
stateless.
3) A dumb implementation of counter recovery is implemented in this patch and the tests ignore
the counters while testing the equality of TaskReports. HADOOP-3970 should address this.
4) The test case now test the effect of lost tracker while the jobtracker is down.
5) A job's state changes to SUCCEEDED/FAILED/KILLED only after garbage collect since garbage
collect finalizes the recovery process.


> Provide ability to persist running jobs (extend HADOOP-1876)
> ------------------------------------------------------------
>
>                 Key: HADOOP-3245
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3245
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: mapred
>            Reporter: Devaraj Das
>            Assignee: Amar Kamat
>         Attachments: HADOOP-3245-v2.5.patch, HADOOP-3245-v2.6.5.patch, HADOOP-3245-v2.6.9.patch,
HADOOP-3245-v4.1.patch, HADOOP-3245-v5.13.patch, HADOOP-3245-v5.14.patch, HADOOP-3245-v5.26.patch,
HADOOP-3245-v5.30-nolog.patch, HADOOP-3245-v5.31.3-nolog.patch, HADOOP-3245-v5.33.1.patch,
HADOOP-3245-v5.35.3-no-log.patch
>
>
> This could probably extend the work done in HADOOP-1876. This feature can be applied
for things like jobs being able to survive jobtracker restarts.

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