[HDFS-11890] Handle NPE in BlockRecoveryWorker when DN is getting shoutdown.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.2
• Fix Version/s: 3.0.0-alpha4
• Component/s: datanode
• Hadoop Flags: Reviewed
• Assignee: Surendra Singh Lilhore
• Reporter: Surendra Singh Lilhore
• Created: 26/May/17 18:33
• Updated: 20/Jun/17 08:34
• Resolved: 20/Jun/17 03:12

Description

Exception in thread "org.apache.hadoop.hdfs.server.datanode.BlockRecoveryWorker$1@1c03e6ae" java.lang.NullPointerException
	at org.apache.hadoop.hdfs.server.datanode.BlockRecoveryWorker$RecoveryTaskContiguous.recover(BlockRecoveryWorker.java:131)
	at org.apache.hadoop.hdfs.server.datanode.BlockRecoveryWorker$1.run(BlockRecoveryWorker.java:596)
	at java.lang.Thread.run(Thread.java:748)