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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4971) Move IO operations out of locking in OpenFileCtx
Date Thu, 19 Sep 2013 04:27:51 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13771576#comment-13771576
] 

Hadoop QA commented on HDFS-4971:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12603983/HDFS-4971.006.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs-nfs.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/5002//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/5002//console

This message is automatically generated.
                
> Move IO operations out of locking in OpenFileCtx
> ------------------------------------------------
>
>                 Key: HDFS-4971
>                 URL: https://issues.apache.org/jira/browse/HDFS-4971
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: nfs
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>         Attachments: HDFS-4971.000.patch, HDFS-4971.001.patch, HDFS-4971.002.patch, HDFS-4971.003.patch,
HDFS-4971.004.patch, HDFS-4971.005.patch, HDFS-4971.006.patch
>
>
> Currently some IO operations (such as writing data to HDFS and dumping to local disk)
in OpenFileCtx may hold a lock which can block processing incoming writing requests. This
jira aims to optimize OpenFileCtx and move the IO operations out of the locking.

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