[HDFS-15366] Active NameNode went down with NPE

• Type: Bug
• Status: Open
• Priority: Critical
• Resolution: Unresolved
• Affects Version/s: 2.7.3
• Assignee: Unassigned
• Reporter: sarun singla
• Created: 20/May/20 16:20
• Updated: 28/May/20 19:21

Description

2020-05-12 00:31:54,565 ERROR blockmanagement.BlockManager (BlockManager.java:run(3816)) - ReplicationMonitor thread received Runtime exception.
java.lang.NullPointerException
 at org.apache.hadoop.hdfs.server.namenode.INode.getParent(INode.java:629)
 at org.apache.hadoop.hdfs.server.namenode.FSDirectory.getRelativePathINodes(FSDirectory.java:1009)
 at org.apache.hadoop.hdfs.server.namenode.FSDirectory.getFullPathINodes(FSDirectory.java:1015)
 at org.apache.hadoop.hdfs.server.namenode.FSDirectory.getFullPathName(FSDirectory.java:1020)
 at org.apache.hadoop.hdfs.server.namenode.INode.getFullPathName(INode.java:591)
 at org.apache.hadoop.hdfs.server.namenode.INodeFile.getName(INodeFile.java:550)
 at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$ReplicationWork.chooseTargets(BlockManager.java:3912)
 at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$ReplicationWork.access$200(BlockManager.java:3875)
 at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeReplicationWorkForBlocks(BlockManager.java:1560)
 at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeReplicationWork(BlockManager.java:1452)
 at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeDatanodeWork(BlockManager.java:3847)
 at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$ReplicationMonitor.run(BlockManager.java:3799)
 at java.lang.Thread.run(Thread.java:748)
2020-05-12 00:31:54,567 INFO util.ExitUtil (ExitUtil.java:terminate(124)) - Exiting with status 1
2020-05-12 00:31:54,621 INFO namenode.NameNode (LogAdapter.java:info(47)) - SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at xyz.com/xxx
************************************************************/

Issue Links

• is related to: HDFS-12832 INode.getFullPathName may throw ArrayIndexOutOfBoundsException lead to NameNode exit