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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9445) Datanode may deadlock while handling a bad volume
Date Mon, 04 Jan 2016 04:16:40 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15080679#comment-15080679
] 

Hadoop QA commented on HDFS-9445:
---------------------------------

| (x) *{color:red}-1 overall{color}* |
\\
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 6s {color} | {color:red}
HDFS-9445 does not apply to branch-2. Rebase required? Wrong Branch? See https://wiki.apache.org/hadoop/HowToContribute
for help. {color} |
\\
\\
|| Subsystem || Report/Notes ||
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12780259/HDFS-9445-branch-2.6_02.patch
|
| JIRA Issue | HDFS-9445 |
| Powered by | Apache Yetus 0.2.0-SNAPSHOT   http://yetus.apache.org |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/14015/console |


This message was automatically generated.



> Datanode may deadlock while handling a bad volume
> -------------------------------------------------
>
>                 Key: HDFS-9445
>                 URL: https://issues.apache.org/jira/browse/HDFS-9445
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.7.2
>            Reporter: Kihwal Lee
>            Assignee: Walter Su
>            Priority: Blocker
>             Fix For: 3.0.0, 2.7.2
>
>         Attachments: HDFS-9445-branch-2.6_02.patch, HDFS-9445.00.patch, HDFS-9445.01.patch,
HDFS-9445.02.patch
>
>
> {noformat}
> Found one Java-level deadlock:
> =============================
> "DataXceiver for client DFSClient_attempt_xxx at /1.2.3.4:100 [Sending block BP-xxxxx:blk_123_456]":
>   waiting to lock monitor 0x00007f77d0731768 (object 0x00000000d60d9930, a org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl),
>   which is held by "Thread-565"
> "Thread-565":
>   waiting for ownable synchronizer 0x00000000d55613c8, (a java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync),
>   which is held by "DataNode: heartbeating to my-nn:8020"
> "DataNode: heartbeating to my-nn:8020":
>   waiting to lock monitor 0x00007f77d0731768 (object 0x00000000d60d9930, a org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl),
>   which is held by "Thread-565"
> {noformat}



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