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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13599) s3a close() to be non-synchronized, so avoid risk of deadlock on shutdown
Date Wed, 28 Sep 2016 23:43:20 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15531260#comment-15531260
] 

Hudson commented on HADOOP-13599:
---------------------------------

SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #10510 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/10510/])
HADOOP-13599. s3a close() to be non-synchronized, so avoid risk of (cnauroth: rev 47f80922dc7cb2fa6d084e6fb1f354c4ec1d4c69)
* (edit) hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3AConfiguration.java
* (edit) hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java


> s3a close() to be non-synchronized, so avoid risk of deadlock on shutdown
> -------------------------------------------------------------------------
>
>                 Key: HADOOP-13599
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13599
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 2.7.3
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>             Fix For: 2.8.0
>
>         Attachments: HADOOP-13599-branch-2-001.patch, HADOOP-13599-branch-2-002.patch,
HADOOP-13599-branch-2-003.patch
>
>
> We've had a report of hive deadlocking on teardown, as a synchronous FS close was blocking
shutdown threads, similar to HADOOP-3139
> S3a close needs to be made non-synchronized. All we need is some code to prevent re-entrancy
at the start; easily done



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