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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6247) Avoid timeouts for replaceBlock() call by sending intermediate responses to Balancer
Date Tue, 12 Aug 2014 14:13:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14094079#comment-14094079
] 

Hadoop QA commented on HDFS-6247:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12661168/HDFS-6247.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}.  There were no new javadoc 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
2.0.3) 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/7615//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/7615//console

This message is automatically generated.

> Avoid timeouts for replaceBlock() call by sending intermediate responses to Balancer
> ------------------------------------------------------------------------------------
>
>                 Key: HDFS-6247
>                 URL: https://issues.apache.org/jira/browse/HDFS-6247
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: balancer, datanode
>    Affects Versions: 2.4.0
>            Reporter: Vinayakumar B
>            Assignee: Vinayakumar B
>         Attachments: HDFS-6247.patch, HDFS-6247.patch, HDFS-6247.patch, HDFS-6247.patch,
HDFS-6247.patch, HDFS-6247.patch, HDFS-6247.patch, HDFS-6247.patch
>
>
> Currently there is no response sent from target Datanode to Balancer for the replaceBlock()
calls.
> Since the Block movement for balancing is throttled, complete block movement will take
time and this could result in timeout at Balancer, which will be trying to read the status
message.
>  
> To Avoid this during replaceBlock() call in in progress Datanode  can send IN_PROGRESS
status messages to Balancer to avoid timeouts and treat BlockMovement as  failed.



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