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From "Rushabh S Shah (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12784) Webhdfs retry policy for unresolved hosts
Date Mon, 06 Nov 2017 20:38:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rushabh S Shah updated HDFS-12784:
----------------------------------
    Component/s: webhdfs

> Webhdfs retry policy for unresolved hosts
> -----------------------------------------
>
>                 Key: HDFS-12784
>                 URL: https://issues.apache.org/jira/browse/HDFS-12784
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: webhdfs
>    Affects Versions: 2.6.0
>            Reporter: Rushabh S Shah
>
> DNs that fail to resolve the NN for the rpc connection will cause the webhdfs client
to fail w/o retries. The webhdfs retry policy should be modified so it will try another DN.
> Webhdfs should use RetryPolicies.retryByRemoteException in addition to the network FailoverOnNetworkExceptionRetry
policy. The NameNodeProxies check for a resolved address should throw a distinct exception
(like UnknownHostException) for the remote ex policy to catch.



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