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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4315) DNs with multiple BPs can have BPOfferServices fail to start due to unsynchronized map access
Date Mon, 17 Dec 2012 08:14:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13533725#comment-13533725
] 

Hudson commented on HDFS-4315:
------------------------------

Integrated in Hadoop-trunk-Commit #3130 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/3130/])
    HDFS-4315. DNs with multiple BPs can have BPOfferServices fail to start due to unsynchronized
map access. Contributed by Aaron T. Myers. (Revision 1422778)

     Result = SUCCESS
atm : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1422778
Files : 
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataStorage.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestWebHdfsWithMultipleNameNodes.java

                
> DNs with multiple BPs can have BPOfferServices fail to start due to unsynchronized map
access
> ---------------------------------------------------------------------------------------------
>
>                 Key: HDFS-4315
>                 URL: https://issues.apache.org/jira/browse/HDFS-4315
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>    Affects Versions: 2.0.2-alpha
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>             Fix For: 2.0.3-alpha
>
>         Attachments: HDFS-4315.patch
>
>
> In some nightly test runs we've seen pretty frequent failures of TestWebHdfsWithMultipleNameNodes.
I've traced the root cause to an unsynchronized map access in the DataStorage class.
> More details in the first comment.

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