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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1573) LeaseChecker thread name trace not that useful
Date Tue, 17 May 2011 20:43:47 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13035033#comment-13035033
] 

Hudson commented on HDFS-1573:
------------------------------

Integrated in Hadoop-Hdfs-trunk-Commit #662 (See [https://builds.apache.org/hudson/job/Hadoop-Hdfs-trunk-Commit/662/])
    HDFS-1573. Add useful tracing information to Lease Renewer thread names. Contributed by
Todd Lipcon.

todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1104526
Files : 
* /hadoop/hdfs/trunk/src/test/hdfs/org/apache/hadoop/hdfs/TestLeaseRenewer.java
* /hadoop/hdfs/trunk/src/java/org/apache/hadoop/hdfs/LeaseRenewer.java
* /hadoop/hdfs/trunk/src/java/org/apache/hadoop/hdfs/DFSClient.java
* /hadoop/hdfs/trunk/CHANGES.txt


> LeaseChecker thread name trace not that useful
> ----------------------------------------------
>
>                 Key: HDFS-1573
>                 URL: https://issues.apache.org/jira/browse/HDFS-1573
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs client
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Trivial
>              Labels: newbie
>             Fix For: 0.23.0
>
>         Attachments: hdfs-1573.txt, hdfs-1573.txt, hdfs-1573.txt, hdfs-1573.txt
>
>
> The LeaseChecker thread in DFSClient will put a stack trace in its thread name, theoretically
to help debug cases where these threads get leaked. However it just shows the stack trace
of whoever is asking for the thread's name, not the stack trace of when the thread was allocated.
I'd like to fix this so that you can see where the thread got started, which was presumably
its original intent.

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