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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8708) DFSClient should ignore dfs.client.retry.policy.enabled for HA proxies
Date Fri, 06 Nov 2015 20:47:11 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14994405#comment-14994405
] 

Kihwal Lee commented on HDFS-8708:
----------------------------------

bq. The default value is false for HA. I think it's good enough.
I agree. Besides, there are cases where we want this to be on and work with HA. E.g. the IP
address change detection code in ipc Client does not work, if the exception bubbles upto HA
retey logic. It only works when retry is done within the same Client instance.

> DFSClient should ignore dfs.client.retry.policy.enabled for HA proxies
> ----------------------------------------------------------------------
>
>                 Key: HDFS-8708
>                 URL: https://issues.apache.org/jira/browse/HDFS-8708
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Jitendra Nath Pandey
>            Assignee: Brahma Reddy Battula
>            Priority: Critical
>
> DFSClient should ignore dfs.client.retry.policy.enabled for HA proxies to ensure fast
failover. Otherwise, dfsclient retries the NN which is no longer active and delays the failover.



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