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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3520) Generation stamp upgrade fails TestDFSUpgradeFromImage
Date Mon, 09 Jun 2008 23:13:45 GMT
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
             Fix For: 0.18.0


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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