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From "Dmitry Lysnichenko (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (AMBARI-6061) OutOfMemoryError during host checks on 2k nodes cluster
Date Tue, 26 Aug 2014 12:46:58 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-6061?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dmitry Lysnichenko reassigned AMBARI-6061:
------------------------------------------

    Assignee: Dmitry Lysnichenko  (was: Myroslav Papirkovskyy)

> OutOfMemoryError during host checks on 2k nodes cluster
> -------------------------------------------------------
>
>                 Key: AMBARI-6061
>                 URL: https://issues.apache.org/jira/browse/AMBARI-6061
>             Project: Ambari
>          Issue Type: Improvement
>          Components: controller
>    Affects Versions: 1.6.1
>            Reporter: Siddharth Wagle
>            Assignee: Dmitry Lysnichenko
>             Fix For: 1.7.0
>
>
> Host checks are executed as custom actions. But each task contains list of all hosts
in roleParams field of execution command.
> On 2k node cluster this results in 170kB overhead for each task and 170kB more after
deserialization, which seem to be enough to cause OutOfMemory error.
> Workaround is to increase max heap size to 4096m.
> For tasks generated by server similar trouble was resolved by moving clusterHostInfo
to Stage level.



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