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https://issues.apache.org/jira/browse/HADOOP-13511?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiaobing Zhou updated HADOOP-13511:
-----------------------------------
Summary: Simplify logic of RPC connection cache (was: Simplify connection
cache logic)
> Simplify logic of RPC connection cache
> --------------------------------------
>
> Key: HADOOP-13511
> URL: https://issues.apache.org/jira/browse/HADOOP-13511
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Xiaobing Zhou
> Assignee: Xiaobing Zhou
>
> In Client#getConnection, the logic of RPC connection cache can be simplified
> using ConcurrentMap#ConcurrentHashMap.
> {code}
> connection = connections.get(remoteId);
> if (connection == null) {
> connection = new Connection(remoteId, serviceClass);
> Connection existing = connections.putIfAbsent(remoteId, connection);
> if (existing != null) {
> connection = existing;
> }
> }
> {code}
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