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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4638) Exception thrown in/from RecoveryManager.recover() should be caught and handled
Date Mon, 02 Mar 2009 05:53:12 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12677896#action_12677896

Amareshwari Sriramadasu commented on HADOOP-4638:

Framework changes look good. 
Some comments in Testcase:
1. testJobTracker() does not have any assertion in  the test.
2. Comments for testRecoveryManager() look different from implementation. Also can you add
the assertion that Job1 is ignored and Job2 succeeded?

> Exception thrown in/from RecoveryManager.recover() should be caught and handled
> -------------------------------------------------------------------------------
>                 Key: HADOOP-4638
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4638
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.20.0
>            Reporter: Amar Kamat
>            Assignee: Amar Kamat
>            Priority: Blocker
>             Fix For: 0.20.0
>         Attachments: HADOOP-4638-v1.1.patch, HADOOP-4638-v1.3.patch, HADOOP-4638-v1.6.patch,
> {{RecoveryManager.recover()}} can throw an exception while recovering a job. Since the
{{JobTracker}} calls {{RecoveryManager.recover()}} from {{offerService()}}, any failure in
recovery will cause {{JobTracker}} to crash. Ideally the {{RecoveryManager}} should log the
failure encountered while recovering the job and continue.

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