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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8386) Improve synchronization of 'streamer' reference in DFSOutputStream
Date Wed, 03 Jun 2015 13:57:40 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14570860#comment-14570860
] 

Hudson commented on HDFS-8386:
------------------------------

FAILURE: Integrated in Hadoop-Hdfs-trunk #2145 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/2145/])
HDFS-8386. Improve synchronization of 'streamer' reference in DFSOutputStream. Contributed
by Rakesh R. (wang: rev efc510a570cf880e7df1b69932aa41932658ee51)
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt


> Improve synchronization of 'streamer' reference in DFSOutputStream
> ------------------------------------------------------------------
>
>                 Key: HDFS-8386
>                 URL: https://issues.apache.org/jira/browse/HDFS-8386
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs-client
>            Reporter: Rakesh R
>            Assignee: Rakesh R
>             Fix For: 2.8.0
>
>         Attachments: HDFS-8386-00.patch, HDFS-8386-01.patch
>
>
> Presently {{DFSOutputStream#streamer}} object reference is accessed inconsistently with
respect to synchronization. It would be good to improve this part. This has been noticed when
implementing the erasure coding feature.
> Please refer the related [discussion thread|https://issues.apache.org/jira/browse/HDFS-8294?focusedCommentId=14541411&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14541411]
in the jira HDFS-8294 for more details.



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