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From "Vinay (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5257) addBlock() retry should return LocatedBlock with locations else client will get AIOBE
Date Fri, 25 Oct 2013 06:52:31 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13805096#comment-13805096
] 

Vinay commented on HDFS-5257:
-----------------------------

Attached the updated patch. Please review


> addBlock() retry should return LocatedBlock with locations else client will get AIOBE
> -------------------------------------------------------------------------------------
>
>                 Key: HDFS-5257
>                 URL: https://issues.apache.org/jira/browse/HDFS-5257
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs-client, namenode
>    Affects Versions: 2.1.1-beta
>            Reporter: Vinay
>            Assignee: Vinay
>            Priority: Critical
>         Attachments: HDFS-5257.patch, HDFS-5257.patch, HDFS-5257.patch, HDFS-5257.patch
>
>
> {{addBlock()}} call retry should return the LocatedBlock with locations if the block
was created in previous call and failover/restart of namenode happened.
> otherwise client will get {{ArrayIndexOutOfBoundsException}} while creating the block
and write will fail.
> {noformat}java.lang.ArrayIndexOutOfBoundsException: 0
> 	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.createBlockOutputStream(DFSOutputStream.java:1118)
> 	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1078)
> 	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:511){noformat}



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