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https://issues.apache.org/jira/browse/HADOOP-3897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12619643#action_12619643
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Lohit Vijayarenu commented on HADOOP-3897:
------------------------------------------
While running secondary namenode, I saw an instance when it failed with
NullPointerException. This was while merging image which had file
underconstruction. The stacktrace is below
{noformat}
2008-08-04 18:23:15,572 INFO org.apache.hadoop.hdfs.server.common.Storage:
Number of files under construction = 1
2008-08-04 18:23:15,938 ERROR
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: Throwable Exception
in doCheckpoint:
2008-08-04 18:23:15,938 ERROR
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode:
java.lang.NullPointerException
at
org.apache.hadoop.hdfs.server.namenode.CorruptReplicasMap.removeFromCorruptReplicasMap(CorruptReplicasMap.java:76)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.removePathAndBlocks(FSNamesystem.java:1579)
at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedDelete(FSDirectory.java:607)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadFSEdits(FSEditLog.java:580)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSEdits(FSImage.java:860)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.doMerge(SecondaryNameNode.java:571)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.access$000(SecondaryNameNode.java:467)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doMerge(SecondaryNameNode.java:344)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doCheckpoint(SecondaryNameNode.java:308)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.run(SecondaryNameNode.java:219)
{noformat}
> SecondaryNameNode fails with NullPointerException
> -------------------------------------------------
>
> Key: HADOOP-3897
> URL: https://issues.apache.org/jira/browse/HADOOP-3897
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.18.0, 0.19.0
> Reporter: Lohit Vijayarenu
>
> SecondaryNameNode fails while checkpoint an image which has file under
> Construction with NullPointerException
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