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Date: Mon, 9 Jun 2008 16:37:45 -0700 (PDT)
From: "Mukund Madhugiri (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Updated: (HADOOP-3520) Generation stamp upgrade fails
 TestDFSUpgradeFromImage
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     [ https://issues.apache.org/jira/browse/HADOOP-3520?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mukund Madhugiri updated HADOOP-3520:
-------------------------------------

    Assignee: Konstantin Shvachko

> Generation stamp upgrade fails TestDFSUpgradeFromImage
> ------------------------------------------------------
>
>                 Key: HADOOP-3520
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3520
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.18.0
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>             Fix For: 0.18.0
>
>         Attachments: failure.log
>
>
> TestDFSUpgradeFromImage occasionally fails doing distributed upgrade related to generation stamps with the following NPE:
> {code}
> java.lang.NullPointerException
> 	at org.apache.hadoop.dfs.UpgradeManagerDatanode.initializeUpgrade(UpgradeManagerDatanode.java:54)
> 	at org.apache.hadoop.dfs.DataStorage.verifyDistributedUpgradeProgress(DataStorage.java:402)
> 	at org.apache.hadoop.dfs.DataStorage.doTransition(DataStorage.java:232)
> 	at org.apache.hadoop.dfs.DataStorage.recoverTransitionRead(DataStorage.java:139)
> 	at org.apache.hadoop.dfs.DataNode.startDataNode(DataNode.java:268)
> 	at org.apache.hadoop.dfs.DataNode.<init>(DataNode.java:185)
> 	at org.apache.hadoop.dfs.DataNode.makeInstance(DataNode.java:2952)
> 	at org.apache.hadoop.dfs.DataNode.instantiateDataNode(DataNode.java:2907)
> 	at org.apache.hadoop.dfs.MiniDFSCluster.startDataNodes(MiniDFSCluster.java:401)
> 	at org.apache.hadoop.dfs.MiniDFSCluster.<init>(MiniDFSCluster.java:267)
> 	at org.apache.hadoop.dfs.MiniDFSCluster.<init>(MiniDFSCluster.java:162)
> 	at org.apache.hadoop.dfs.TestDFSUpgradeFromImage.testUpgradeFromImage(TestDFSUpgradeFromImage.java:180)
> {code}

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