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https://issues.apache.org/jira/browse/HBASE-986?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack resolved HBASE-986.
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Resolution: Later
Resolving as Later. Need datanode fixes first.
> Cache sockets in DFSClient
> --------------------------
>
> Key: HBASE-986
> URL: https://issues.apache.org/jira/browse/HBASE-986
> Project: Hadoop HBase
> Issue Type: Improvement
> Reporter: stack
> Assignee: stack
> Priority: Blocker
> Fix For: 0.20.0
>
> Attachments: socketCache.patch
>
>
> Talking with Dhruba here at Apachecon, he suggested that setup of sockets is
> big price payed during random-read. Stefan hacked into DFSClient an ugly
> patch that would allow us quickly test random-reading on top of a cache of
> cached sockets. I just tested it. I see 4X improvement.
> Making this a blocker on 0.19.0. Looks like we can hack in a real socket
> pool using a custom SocketFactory under DFSClient. It'll be messy but the
> promised improvement is big.
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