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From "Sangjin Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6401) WebHdfs should always use the network failover policy
Date Thu, 12 May 2016 22:28:13 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15282184#comment-15282184
] 

Sangjin Lee commented on HDFS-6401:
-----------------------------------

There has been no movement on this for a while. We'll need to move it out of scope for 2.8.0
soon. Let me know if you disagree.

> WebHdfs should always use the network failover policy
> -----------------------------------------------------
>
>                 Key: HDFS-6401
>                 URL: https://issues.apache.org/jira/browse/HDFS-6401
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: webhdfs
>    Affects Versions: 2.0.0-alpha, 3.0.0-alpha1
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Critical
>
> Webhdfs only uses the network failover policy if HA is enabled.  The policy adds retries
for exceptions such as connect failures which are always useful.  The proxy also provides
support for standby and retriable exceptions which are required for HA IP-based failover because
the client does not know if the NN is HA capable or not.



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