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https://issues.apache.org/jira/browse/HDFS-15210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17291358#comment-17291358
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Wei-Chiu Chuang commented on HDFS-15210:
----------------------------------------
Cherrypicked to lower branches branch-3.3 ~ branch-3.1.
> EC : File write hanged when DN is shutdown by admin command.
> ------------------------------------------------------------
>
> Key: HDFS-15210
> URL: https://issues.apache.org/jira/browse/HDFS-15210
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ec
> Affects Versions: 3.1.1
> Reporter: Surendra Singh Lilhore
> Assignee: Surendra Singh Lilhore
> Priority: Major
> Fix For: 3.4.0
>
> Attachments: HDFS-15210.001.patch, HDFS-15210.002.patch,
> HDFS-15210.003.patch, dump.txt
>
>
> EC Blocks : blk_-9223372036854291632_10668910,
> blk_-9223372036854291631_10668910, blk_-9223372036854291630_10668910,
> blk_-9223372036854291629_10668910, blk_-9223372036854291628_10668910
>
> Two block DN restarted : blk_-9223372036854291630_10668910 &
> blk_-9223372036854291632_10668910
> {code:java}
> 2020-03-03 18:12:17,074 DEBUG hdfs.DataStreamer: DFSClient seqno: -2 reply:
> OOB_RESTART downstreamAckTimeNanos: 0 flag: 8
> 2020-03-03 18:13:39,469 DEBUG hdfs.DataStreamer: DFSClient seqno: -2 reply:
> OOB_RESTART downstreamAckTimeNanos: 0 flag: 8 {code}
>
> Restarted streams are stuck in below stacktrace :
> {code}
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> at
> org.apache.hadoop.hdfs.DFSStripedOutputStream$MultipleBlockingQueue.take(DFSStripedOutputStream.java:110)
> at
> org.apache.hadoop.hdfs.StripedDataStreamer.setupPipelineInternal(StripedDataStreamer.java:140)
> at
> org.apache.hadoop.hdfs.DataStreamer.setupPipelineForAppendOrRecovery(DataStreamer.java:1540)
> at
> org.apache.hadoop.hdfs.DataStreamer.processDatanodeOrExternalError(DataStreamer.java:1276)
> at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:669) at
> org.apache.hadoop.hdfs.StripedDataStreamer.run(StripedDataStreamer.java:46)
> {code}
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