Generation stamp upgrade fails TestDFSUpgradeFromImage
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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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