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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5483) NN should gracefully handle multiple block replicas on same DN
Date Thu, 19 Dec 2013 03:18:10 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13852552#comment-13852552

Hadoop QA commented on HDFS-5483:

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  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/5763//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/5763//console

This message is automatically generated.

> NN should gracefully handle multiple block replicas on same DN
> --------------------------------------------------------------
>                 Key: HDFS-5483
>                 URL: https://issues.apache.org/jira/browse/HDFS-5483
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>    Affects Versions: Heterogeneous Storage (HDFS-2832)
>            Reporter: Arpit Agarwal
>             Fix For: 3.0.0
>         Attachments: h5483.02.patch
> {{BlockManager#reportDiff}} can cause an assertion failure in {{BlockInfo#moveBlockToHead}}
if the block report shows the same block as belonging to more than one storage.
> The issue is that {{moveBlockToHead}} assumes it will find the DatanodeStorageInfo for
the given block.
> Exception details:
> {code}
> java.lang.AssertionError: Index is out of bound
>         at org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo.setNext(BlockInfo.java:152)
>         at org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo.moveBlockToHead(BlockInfo.java:351)
>         at org.apache.hadoop.hdfs.server.blockmanagement.DatanodeStorageInfo.moveBlockToHead(DatanodeStorageInfo.java:243)
>         at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.reportDiff(BlockManager.java:1841)
>         at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.processReport(BlockManager.java:1709)
>         at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.processReport(BlockManager.java:1637)
>         at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.blockReport(NameNodeRpcServer.java:984)
>         at org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailure.testVolumeFailure(TestDataNodeVolumeFailure.java:165)
> {code}

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