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Posted to common-issues@hadoop.apache.org by "Sangjin Lee (JIRA)" <ji...@apache.org> on 2016/05/12 22:27:13 UTC
[jira] [Commented] (HADOOP-9747) Reduce unnecessary UGI
synchronization
[ https://issues.apache.org/jira/browse/HADOOP-9747?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15282176#comment-15282176 ]
Sangjin Lee commented on HADOOP-9747:
-------------------------------------
There has been no movement on this for a while. We'll need to move it out of scope for 2.8.0 soon. Let me know if you disagree.
> Reduce unnecessary UGI synchronization
> --------------------------------------
>
> Key: HADOOP-9747
> URL: https://issues.apache.org/jira/browse/HADOOP-9747
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 0.23.0, 2.0.0-alpha, 3.0.0-alpha1
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Critical
>
> Jstacks of heavily loaded NNs show up to dozens of threads blocking in the UGI.
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