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Date: Wed, 17 Nov 2010 15:16:16 -0500 (EST)
From: "Todd Lipcon (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Subject: [jira] Assigned: (HDFS-1502) TestBlockRecovery triggers NPE in
 assert
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     [ https://issues.apache.org/jira/browse/HDFS-1502?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Todd Lipcon reassigned HDFS-1502:
---------------------------------

    Assignee: Todd Lipcon

> TestBlockRecovery triggers NPE in assert
> ----------------------------------------
>
>                 Key: HDFS-1502
>                 URL: https://issues.apache.org/jira/browse/HDFS-1502
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 0.22.0
>            Reporter: Eli Collins
>            Assignee: Todd Lipcon
>            Priority: Minor
>             Fix For: 0.22.0
>
>
> {noformat}
> Testcase: testRBW_RWRReplicas took 10.333 sec
>         Caused an ERROR
> null
> java.lang.NullPointerException
>         at org.apache.hadoop.hdfs.server.datanode.DataNode.syncBlock(DataNode.java:1881)
>         at org.apache.hadoop.hdfs.server.datanode.TestBlockRecovery.testSyncReplicas(TestBlockRecovery.java:144)
>         at org.apache.hadoop.hdfs.server.datanode.TestBlockRecovery.testRBW_RWRReplicas(TestBlockRecovery.java:305)
> {noformat}
> {noformat}
>         Block reply = r.datanode.updateReplicaUnderRecovery(
>             r.rInfo, recoveryId, newBlock.getNumBytes());
>         assert reply.equals(newBlock) &&
>                reply.getNumBytes() == newBlock.getNumBytes() :
>           "Updated replica must be the same as the new block.";    <----- line 1881
> {noformat}
> Not sure how reply could be null since  updateReplicaUnderRecovery always returns a newly instantiated object.

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