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https://issues.apache.org/jira/browse/HDFS-12976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16310316#comment-16310316
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Íñigo Goiri commented on HDFS-12976:
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Any consideration on using the hedged approach?
In HDFS-6648, I added the ability to make the access to the NNs in a random
order too.
In addition, the Router-based federation, remembers the state of the Namenodes
and issues the requests to the active one.
Once this is done, I should add an option to mimic the behavior you are
describing and send the READ requests to the standby namenodes.
> Introduce StandbyReadProxyProvider
> ----------------------------------
>
> Key: HDFS-12976
> URL: https://issues.apache.org/jira/browse/HDFS-12976
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
> Reporter: Konstantin Shvachko
>
> {{StandbyReadProxyProvider}} should implement {{FailoverProxyProvider}}
> interface and be able to submit read requests to ANN and SBN(s).
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