[HDFS-9822] Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: erasure-coding
• Labels: hdfs-ec-3.0-nice-to-have
• Assignee: Sammi Chen
• Reporter: Tsz-wo Sze
• Created: 17/Feb/16 23:22
• Updated: 17/Aug/17 23:57

Description

Found the following AssertionError in https://builds.apache.org/job/PreCommit-HDFS-Build/14501/testReport/org.apache.hadoop.hdfs.server.namenode/TestReconstructStripedBlocks/testMissingStripedBlockWithBusyNode2/

AssertionError: Should wait the previous reconstruction to finish
	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.validateReconstructionWork(BlockManager.java:1680)
	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeReconstructionWorkForBlocks(BlockManager.java:1536)
	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeBlockReconstructionWork(BlockManager.java:1472)
	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeDatanodeWork(BlockManager.java:4229)
	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$ReplicationMonitor.run(BlockManager.java:4100)
	at java.lang.Thread.run(Thread.java:745)

	at org.apache.hadoop.util.ExitUtil.terminate(ExitUtil.java:126)
	at org.apache.hadoop.util.ExitUtil.terminate(ExitUtil.java:170)
	at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$ReplicationMonitor.run(BlockManager.java:4119)
	at java.lang.Thread.run(Thread.java:745)