[jira] [Updated] (HADOOP-13511) Simplify logic of RPC connection cache

["Xiaobing Zhou (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-13511?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

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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