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From "Hari Mankude (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3192) Active NN should exit when it has not received a getServiceStatus() rpc from ZKFC for timeout secs
Date Tue, 03 Apr 2012 23:36:22 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13245889#comment-13245889
] 

Hari Mankude commented on HDFS-3192:
------------------------------------

FC via healthmonitor will periodically poll the status of the NN via getServiceStatus(). If
active NN has not heard from FC for timeout number of seconds, it should exit. This timeout
has to be tied to the timeout of the ephemeral node in zookeeper and it should be a fraction
of the ephemeral node timeout.

This ensures that if FC has died, then active NN also failfasts.
                
> Active NN should exit when it has not received a getServiceStatus() rpc from ZKFC for
timeout secs
> --------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-3192
>                 URL: https://issues.apache.org/jira/browse/HDFS-3192
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, name-node
>            Reporter: Hari Mankude
>            Assignee: Hari Mankude
>


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