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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-9822) Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at the same time
Date Thu, 17 Aug 2017 18:05:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9822?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Wang updated HDFS-9822:
------------------------------
    Target Version/s:   (was: )
              Status: Open  (was: Patch Available)

> Erasure Coding: Avoids scheduling multiple reconstruction tasks for a striped block at
the same time
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-9822
>                 URL: https://issues.apache.org/jira/browse/HDFS-9822
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: erasure-coding
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: SammiChen
>              Labels: hdfs-ec-3.0-nice-to-have
>         Attachments: HDFS-9822-001.patch, HDFS-9822-002.patch
>
>
> Found the following AssertionError in https://builds.apache.org/job/PreCommit-HDFS-Build/14501/testReport/org.apache.hadoop.hdfs.server.namenode/TestReconstructStripedBlocks/testMissingStripedBlockWithBusyNode2/
> {code}
> 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)
> {code}



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