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Posted to yarn-issues@hadoop.apache.org by "sandflee (JIRA)" <ji...@apache.org> on 2015/11/09 11:29:11 UTC

[jira] [Updated] (YARN-4050) NM event dispatcher may blocked by LogAggregationService if NameNode is slow

     [ https://issues.apache.org/jira/browse/YARN-4050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

sandflee updated YARN-4050:
---------------------------
    Assignee:     (was: sandflee)

> NM event dispatcher may blocked by LogAggregationService if NameNode is slow
> ----------------------------------------------------------------------------
>
>                 Key: YARN-4050
>                 URL: https://issues.apache.org/jira/browse/YARN-4050
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: sandflee
>
> env:  nm restart and log aggregation is enabled. 
> NN is almost dead, when we restart NM, NM event dispatcher is blocked until NN returns to normal.It seems. NM recovered app  and send APPLICATION_START event to log aggregation service, it will check log dir permission in HDFS(BLOCKED) 



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