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From "Ayush Saxena (Jira)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-14655) [SBN Read] Namenode crashes if one of The JN is down
Date Tue, 01 Oct 2019 19:36:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-14655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16942268#comment-16942268
] 

Ayush Saxena commented on HDFS-14655:
-------------------------------------

Two Checkstyle warning, I need to fix.
 [~xkrogen]  can you give a check once

> [SBN Read] Namenode crashes if one of The JN is down
> ----------------------------------------------------
>
>                 Key: HDFS-14655
>                 URL: https://issues.apache.org/jira/browse/HDFS-14655
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 3.3.0
>            Reporter: Harshakiran Reddy
>            Assignee: Ayush Saxena
>            Priority: Critical
>             Fix For: 3.3.0, 3.1.4, 3.2.2
>
>         Attachments: HDFS-14655-01.patch, HDFS-14655-02.patch, HDFS-14655-03.patch, HDFS-14655-04.patch,
HDFS-14655-05.patch, HDFS-14655-06.patch, HDFS-14655-07.patch, HDFS-14655-08.patch, HDFS-14655-branch-2-01.patch,
HDFS-14655.poc.patch
>
>
> {noformat}
> 2019-07-04 17:35:54,064 | INFO  | Logger channel (from parallel executor) to XXXXXXX/XXXXXXX
| Retrying connect to server: XXXXXXX/XXXXXXX. Already tried 9 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10,
sleepTime=1000 MILLISECONDS) | Client.java:975
> 2019-07-04 17:35:54,087 | FATAL | Edit log tailer | Unknown error encountered while tailing
edits. Shutting down standby NN. | EditLogTailer.java:474
> java.lang.OutOfMemoryError: unable to create new native thread
> 	at java.lang.Thread.start0(Native Method)
> 	at java.lang.Thread.start(Thread.java:717)
> 	at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:957)
> 	at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1378)
> 	at com.google.common.util.concurrent.MoreExecutors$ListeningDecorator.execute(MoreExecutors.java:440)
> 	at com.google.common.util.concurrent.AbstractListeningExecutorService.submit(AbstractListeningExecutorService.java:56)
> 	at org.apache.hadoop.hdfs.qjournal.client.IPCLoggerChannel.getJournaledEdits(IPCLoggerChannel.java:565)
> 	at org.apache.hadoop.hdfs.qjournal.client.AsyncLoggerSet.getJournaledEdits(AsyncLoggerSet.java:272)
> 	at org.apache.hadoop.hdfs.qjournal.client.QuorumJournalManager.selectRpcInputStreams(QuorumJournalManager.java:533)
> 	at org.apache.hadoop.hdfs.qjournal.client.QuorumJournalManager.selectInputStreams(QuorumJournalManager.java:508)
> 	at org.apache.hadoop.hdfs.server.namenode.JournalSet.selectInputStreams(JournalSet.java:275)
> 	at org.apache.hadoop.hdfs.server.namenode.FSEditLog.selectInputStreams(FSEditLog.java:1681)
> 	at org.apache.hadoop.hdfs.server.namenode.FSEditLog.selectInputStreams(FSEditLog.java:1714)
> 	at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.doTailEdits(EditLogTailer.java:307)
> 	at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.doWork(EditLogTailer.java:460)
> 	at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.access$300(EditLogTailer.java:410)
> 	at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread$1.run(EditLogTailer.java:427)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:360)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1709)
> 	at org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:483)
> 	at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.run(EditLogTailer.java:423)
> 2019-07-04 17:35:54,112 | INFO  | Edit log tailer | Exiting with status 1: java.lang.OutOfMemoryError:
unable to create new native thread | ExitUtil.java:210
> {noformat}



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