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Date: Thu, 28 Jun 2012 17:34:46 +0000 (UTC)
From: "Hadoop QA (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-3157) Error in deleting block is keep on
 coming from DN even after the block report and directory scanning has
 happened
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    [ https://issues.apache.org/jira/browse/HDFS-3157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13403263#comment-13403263 ] 

Hadoop QA commented on HDFS-3157:
---------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12533840/HDFS-3157-5.patch
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 3 new or modified test files.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 eclipse:eclipse.  The patch built with eclipse:eclipse.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit warnings.

    +1 core tests.  The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/2718//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/2718//console

This message is automatically generated.
                
> Error in deleting block is keep on coming from DN even after the block report and directory scanning has happened
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-3157
>                 URL: https://issues.apache.org/jira/browse/HDFS-3157
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.23.0, 0.24.0
>            Reporter: J.Andreina
>            Assignee: Ashish Singhi
>         Attachments: HDFS-3157-1.patch, HDFS-3157-1.patch, HDFS-3157-2.patch, HDFS-3157-3.patch, HDFS-3157-3.patch, HDFS-3157-4.patch, HDFS-3157-5.patch, HDFS-3157.patch, HDFS-3157.patch, HDFS-3157.patch, h3157_20120618.patch
>
>
> Cluster setup:
> 1NN,Three DN(DN1,DN2,DN3),replication factor-2,"dfs.blockreport.intervalMsec" 300,"dfs.datanode.directoryscan.interval" 1
> step 1: write one file "a.txt" with sync(not closed)
> step 2: Delete the blocks in one of the datanode say DN1(from rbw) to which replication happened.
> step 3: close the file.
> Since the replication factor is 2 the blocks are replicated to the other datanode.
> Then at the NN side the following cmd is issued to DN from which the block is deleted
> -------------------------------------------------------------------------------------
> {noformat}
> 2012-03-19 13:41:36,905 INFO org.apache.hadoop.hdfs.StateChange: BLOCK NameSystem.addToCorruptReplicasMap: duplicate requested for blk_2903555284838653156 to add as corrupt on XX.XX.XX.XX by /XX.XX.XX.XX because reported RBW replica with genstamp 1002 does not match COMPLETE block's genstamp in block map 1003
> 2012-03-19 13:41:39,588 INFO org.apache.hadoop.hdfs.StateChange: BLOCK* Removing block blk_2903555284838653156_1003 from neededReplications as it has enough replicas.
> {noformat}
> From the datanode side in which the block is deleted the following exception occured
> {noformat}
> 2012-02-29 13:54:13,126 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Unexpected error trying to delete block blk_2903555284838653156_1003. BlockInfo not found in volumeMap.
> 2012-02-29 13:54:13,126 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Error processing datanode Command
> java.io.IOException: Error in deleting blocks.
> 	at org.apache.hadoop.hdfs.server.datanode.FSDataset.invalidate(FSDataset.java:2061)
> 	at org.apache.hadoop.hdfs.server.datanode.BPOfferService.processCommandFromActive(BPOfferService.java:581)
> 	at org.apache.hadoop.hdfs.server.datanode.BPOfferService.processCommandFromActor(BPOfferService.java:545)
> 	at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.processCommand(BPServiceActor.java:690)
> 	at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.offerService(BPServiceActor.java:522)
> 	at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:662)
> 	at java.lang.Thread.run(Thread.java:619)
> {noformat}

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