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Posted to hdfs-dev@hadoop.apache.org by "Konstantin Shvachko (JIRA)" <ji...@apache.org> on 2013/08/08 00:14:48 UTC
[jira] [Created] (HDFS-5077) NPE in
FSNamesystem.commitBlockSynchronization()
Konstantin Shvachko created HDFS-5077:
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Summary: NPE in FSNamesystem.commitBlockSynchronization()
Key: HDFS-5077
URL: https://issues.apache.org/jira/browse/HDFS-5077
Project: Hadoop HDFS
Issue Type: Bug
Components: namenode
Affects Versions: 2.0.5-alpha
Reporter: Konstantin Shvachko
NN starts a block recovery, which will synchronize block replicas on different DNs. In the end one of DNs will report the list of the nodes containing the consistent replicas to the NN via commitBlockSynchronization() call. The NPE happens if just before processing commitBlockSynchronization() NN removes from active one of DNs that are then reported in the call.
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