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From "Akira Ajisaka (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11180) Intermittent deadlock in NameNode when failover happens.
Date Tue, 29 Nov 2016 08:12:58 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11180?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Akira Ajisaka updated HDFS-11180:
    Attachment: HDFS-11180.04.patch

04 patch:
* Ignored findbugs warnings.
* There are some metrics using the newly unsynchronized FSEditLog methods and the metrics
are used by non-metrics code. I created some new methods using synchronized FSEditLog methods
for non-metrics code.
* Removed try-with-resources statement for regression test. This makes easier for backporting
to branch-2.6/2.7.
* Fixed some issues, such as calling Preconditions.checkState in unsynchronized method.

> Intermittent deadlock in NameNode when failover happens.
> --------------------------------------------------------
>                 Key: HDFS-11180
>                 URL: https://issues.apache.org/jira/browse/HDFS-11180
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.6.0
>            Reporter: Abhishek Modi
>            Assignee: Akira Ajisaka
>            Priority: Blocker
>              Labels: high-availability
>         Attachments: HDFS-11180.00.patch, HDFS-11180.01.patch, HDFS-11180.02.patch, HDFS-11180.03.patch,
HDFS-11180.04.patch, jstack.log
> It is happening due to metrics getting updated at the same time when failover is happening.
Please find attached jstack at that point of time.

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