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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-3582) Hook daemon process exit for testing
Date Wed, 11 Jul 2012 08:05:35 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3582?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eli Collins updated HDFS-3582:
------------------------------

    Attachment: hdfs-3582.txt

Thanks Stephen.  Updated patch.
- ExitUtil members now volatile since we're catching the multithread case now (exit in one
thread and detected by MiniDFSCluster in another)
- Made ExitUtil limited private to HDFS/MR. Once we're happy with the API for these two we
can broaden the audience.
                
> Hook daemon process exit for testing 
> -------------------------------------
>
>                 Key: HDFS-3582
>                 URL: https://issues.apache.org/jira/browse/HDFS-3582
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: test
>    Affects Versions: 2.0.0-alpha
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>            Priority: Minor
>         Attachments: hdfs-3582.txt, hdfs-3582.txt, hdfs-3582.txt, hdfs-3582.txt, hdfs-3582.txt,
hdfs-3582.txt, hdfs-3582.txt, hdfs-3582.txt, hdfs-3582.txt, hdfs-3582.txt, hdfs-3582.txt
>
>
> Occasionally the tests fail with "java.util.concurrent.ExecutionException: org.apache.maven.surefire.booter.SurefireBooterForkException:
> Error occurred in starting fork, check output in log" because the NN is exit'ing (via
System#exit or Runtime#exit). Unfortunately Surefire doesn't retain the log output (see SUREFIRE-871)
so the test log is empty, we don't know which part of the test triggered which exit in HDFS.
To make this easier to debug let's hook all daemon process exits when running the tests.

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