[HDFS-12891] Do not invalidate blocks if toInvalidate is empty

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.1.0, 3.0.1
• Labels: flaky-test
• Target Version/s: 3.0.0
• Assignee: Zsolt Venczel
• Reporter: Zsolt Venczel
• Created: 05/Dec/17 10:34
• Updated: 02/Oct/19 17:12
• Resolved: 12/Dec/17 01:02

Description

java.lang.AssertionError: Test resulted in an unexpected exit
	at org.apache.hadoop.hdfs.server.namenode.ha.TestDNFencingWithReplication.testFencingStress(TestDNFencingWithReplication.java:147)
:
:
2017-10-19 21:39:40,068 [main] INFO  hdfs.MiniDFSCluster (MiniDFSCluster.java:shutdown(1965)) - Shutting down the Mini HDFS Cluster
2017-10-19 21:39:40,068 [main] FATAL hdfs.MiniDFSCluster (MiniDFSCluster.java:shutdown(1968)) - Test resulted in an unexpected exit
1: java.lang.AssertionError
	at org.apache.hadoop.util.ExitUtil.terminate(ExitUtil.java:265)
	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$RedundancyMonitor.run(BlockManager.java:4437)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.AssertionError
	at org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor.addBlocksToBeInvalidated(DatanodeDescriptor.java:641)
	at org.apache.hadoop.hdfs.server.blockmanagement.InvalidateBlocks.invalidateWork(InvalidateBlocks.java:299)
	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.invalidateWorkForOneNode(BlockManager.java:4246)
	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeInvalidateWork(BlockManager.java:1736)
	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeDatanodeWork(BlockManager.java:4561)
	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$RedundancyMonitor.run(BlockManager.java:4418)
	... 1 more