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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5020) Make DatanodeProtocol#blockReceivedAndDeleted idempotent
Date Tue, 23 Jul 2013 10:44:48 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13716294#comment-13716294
] 

Hadoop QA commented on HDFS-5020:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12593657/HDFS-5020.002.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.

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

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/4711//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/4711//console

This message is automatically generated.
                
> Make DatanodeProtocol#blockReceivedAndDeleted idempotent
> --------------------------------------------------------
>
>                 Key: HDFS-5020
>                 URL: https://issues.apache.org/jira/browse/HDFS-5020
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 3.0.0
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>         Attachments: HDFS-5020.001.patch, HDFS-5020.002.patch
>
>
> Currently DatanodeProtocol#blockReceivedAndDeleted is not idempotent because pending
replication maps in NN only tracks the number of the pending replicas, and a retry request
about a received block can cause the pending number decreased more than once. We can make
blockReceivedAndDeleted idempotent by tracking corresponding datanodes in the pending replication
map. 

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