[
https://issues.apache.org/jira/browse/HDFS-16479?focusedWorklogId=756809&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-756809
]
ASF GitHub Bot logged work on HDFS-16479:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 14/Apr/22 02:23
Start Date: 14/Apr/22 02:23
Worklog Time Spent: 10m
Work Description: tasanuma merged PR #4138:
URL: https://github.com/apache/hadoop/pull/4138
Issue Time Tracking
-------------------
Worklog Id: (was: 756809)
Time Spent: 2h (was: 1h 50m)
> EC: NameNode should not send a reconstruction work when the source datanodes
> are insufficient
> ---------------------------------------------------------------------------------------------
>
> Key: HDFS-16479
> URL: https://issues.apache.org/jira/browse/HDFS-16479
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ec, erasure-coding
> Reporter: Yuanbo Liu
> Priority: Critical
> Labels: pull-request-available
> Time Spent: 2h
> Remaining Estimate: 0h
>
> We got this exception from DataNodes
> {color:#707070}java.lang.IllegalArgumentException: No enough live striped
> blocks.{color}
> {color:#707070} at
> com.google.common.base.Preconditions.checkArgument(Preconditions.java:141){color}
> {color:#707070} at
> org.apache.hadoop.hdfs.server.datanode.erasurecode.StripedReader.<init>(StripedReader.java:128){color}
> {color:#707070} at
> org.apache.hadoop.hdfs.server.datanode.erasurecode.StripedReconstructor.<init>(StripedReconstructor.java:135){color}
> {color:#707070} at
> org.apache.hadoop.hdfs.server.datanode.erasurecode.StripedBlockReconstructor.<init>(StripedBlockReconstructor.java:41){color}
> {color:#707070} at
> org.apache.hadoop.hdfs.server.datanode.erasurecode.ErasureCodingWorker.processErasureCodingTasks(ErasureCodingWorker.java:133){color}
> {color:#707070} at
> org.apache.hadoop.hdfs.server.datanode.BPOfferService.processCommandFromActive(BPOfferService.java:796){color}
> {color:#707070} at
> org.apache.hadoop.hdfs.server.datanode.BPOfferService.processCommandFromActor(BPOfferService.java:680){color}
> {color:#707070} at
> org.apache.hadoop.hdfs.server.datanode.BPServiceActor$CommandProcessingThread.processCommand(BPServiceActor.java:1314){color}
> {color:#707070} at
> org.apache.hadoop.hdfs.server.datanode.BPServiceActor$CommandProcessingThread.lambda$enqueue$2(BPServiceActor.java:1360){color}
> {color:#707070} at
> org.apache.hadoop.hdfs.server.datanode.BPServiceActor$CommandProcessingThread.processQueue(BPServiceActor.java:1287){color}
> After going through the code of ErasureCodingWork.java, we found
> {code:java}
> targets[0].getDatanodeDescriptor().addBlockToBeErasureCoded( new
> ExtendedBlock(blockPoolId, stripedBlk), getSrcNodes(), targets,
> getLiveBlockIndicies(), stripedBlk.getErasureCodingPolicy());
> {code}
>
> the liveBusyBlockIndicies is not considered as liveBlockIndicies, hence
> erasure coding reconstruction sometimes will fail as 'No enough live striped
> blocks'.
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
