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From "Jitendra Nath Pandey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDDS-1454) GC other system pause events can trigger pipeline destroy for all the nodes in the cluster
Date Tue, 23 Apr 2019 16:31:00 GMT

    [ https://issues.apache.org/jira/browse/HDDS-1454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16824305#comment-16824305
] 

Jitendra Nath Pandey commented on HDDS-1454:
--------------------------------------------

HADOOP-9618 added a jvm pause monitor into NN. This could be useful here. 

> GC other system pause events can trigger pipeline destroy for all the nodes in the cluster
> ------------------------------------------------------------------------------------------
>
>                 Key: HDDS-1454
>                 URL: https://issues.apache.org/jira/browse/HDDS-1454
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>          Components: SCM
>    Affects Versions: 0.3.0
>            Reporter: Mukul Kumar Singh
>            Priority: Major
>              Labels: MiniOzoneChaosCluster
>
> In a MiniOzoneChaosCluster run it was observed that events like GC pauses or any other
pauses in SCM can mark all the datanodes as stale in SCM. This will trigger multiple pipeline
destroy and will render the system unusable. 



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