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From "Robert Chansler (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-3245) Provide ability to persist running jobs (extend HADOOP-1876)
Date Tue, 21 Oct 2008 21:30:44 GMT

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

Robert Chansler updated HADOOP-3245:
------------------------------------

    Release Note: Introduced recovery of jobs when JobTracker restarts. This facility is off
by default. Introduced config parameters mapred.jobtracker.restart.recover, mapred.jobtracker.job.history.block.size,
and mapred.jobtracker.job.history.buffer.size.  (was: Adds the facility to recover running
jobs upon a jobtracker restart i.e jobs can now survive jobtracker restarts. Job's history
is used to recover the running jobs. By default the restart mode is turned off. Here are the
config parameters that control the recovery
mapred.jobtracker.restart.recover : the recovery switch
mapred.jobtracker.job.history.block.size : block size for the job history file. 
mapred.jobtracker.job.history.buffer.size : buffer size for the job history file)
    Hadoop Flags: [Incompatible change, Reviewed]  (was: [Reviewed, Incompatible change])

> 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
>             Fix For: 0.19.0
>
>         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, HADOOP-3245-v5.36-no-log.patch, HADOOP-3245-v5.36.1-no-log.patch,
HADOOP-3245-v5.36.2-no-log.patch, HADOOP-3245-v5.36.3-no-log.patch, HADOOP-3245-v5.36.3-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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