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https://issues.apache.org/jira/browse/HDFS-15096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17009406#comment-17009406
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Ayush Saxena commented on HDFS-15096:
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Have been trying to improve the time taken by the router for a call, In the
process observed the getServerDefaults() is also taking some considerable time,
when connected to multiple clients.
Tried Caching it at Router similar to DFSClient, Reduces the call time
considerably for the subsequent calls.
> RBF : GetServerDefaults Should be Cached At Router
> --------------------------------------------------
>
> Key: HDFS-15096
> URL: https://issues.apache.org/jira/browse/HDFS-15096
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Ayush Saxena
> Assignee: Ayush Saxena
> Priority: Major
>
> Presently each getServerDefault calls are triggered to the Namespace, The
> DFSClient caches the getServerDefaults(), similarly the Router can also cache
> the getServerDefaults(), as router connects to multiple clients, this
> improves performance for subsequent calls.
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