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https://issues.apache.org/jira/browse/HADOOP-3520?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Konstantin Shvachko updated HADOOP-3520:
----------------------------------------
Priority: Blocker (was: Major)
Making it a blocker for 0.18.
We need an investigation on whether this affects regular generation stamp
upgrade or is it just test related.
We will need to fix it if this is the upgrade bug.
> 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
> Priority: Blocker
> 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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