hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10817) Add Logging for Long-held NN Read Locks
Date Thu, 01 Sep 2016 07:07:21 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10817?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zhe Zhang updated HDFS-10817:
-----------------------------
      Resolution: Fixed
    Hadoop Flags: Reviewed
          Status: Resolved  (was: Patch Available)

I committed the patch from trunk to branch-2.7. Note that from trunk to branch-2.8 there is
an addendum fix, because the test failure was found when I tried backporting from branch-2.8
to branch-2.7.

Thanks [~xkrogen] for the contribution. Great work!

> Add Logging for Long-held NN Read Locks
> ---------------------------------------
>
>                 Key: HDFS-10817
>                 URL: https://issues.apache.org/jira/browse/HDFS-10817
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: logging, namenode
>            Reporter: Erik Krogen
>            Assignee: Erik Krogen
>             Fix For: 2.8.0, 2.7.4, 3.0.0-alpha2
>
>         Attachments: HDFS-10817.000.patch, HDFS-10817.001.patch, HDFS-10817.002.patch,
HDFS-10817.003.patch, HDFS-10817.004.patch, HDFS-10817.addendum.000.patch, HDFS-10817.addendum.001.patch
>
>
> Right now the Namenode will log when a write lock is held for a long time to help tracks
methods which are causing expensive delays. Let's do the same for read locks since these operations
may also be expensive/long and cause delays. 



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org


Mime
View raw message