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From Íñigo Goiri (JIRA) <j...@apache.org>
Subject [jira] [Commented] (HDFS-13232) RBF: ConnectionPool should return first usable connection
Date Sat, 10 Mar 2018 01:17:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-13232?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16393923#comment-16393923
] 

Íñigo Goiri commented on HDFS-13232:
------------------------------------

+1 on  [^HDFS-13232.003.patch].
I'll wait a day for Yetus and [~csun] for feedback.

> RBF: ConnectionPool should return first usable connection
> ---------------------------------------------------------
>
>                 Key: HDFS-13232
>                 URL: https://issues.apache.org/jira/browse/HDFS-13232
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Wei Yan
>            Assignee: Ekanth S
>            Priority: Minor
>         Attachments: HDFS-13232.001.patch, HDFS-13232.002.patch, HDFS-13232.003.patch
>
>
> In current ConnectionPool.getConnection(), it will return the first active connection:
> {code:java}
> for (int i=0; i<size; i++) {
>   int index = (threadIndex + i) % size;
>   conn = tmpConnections.get(index);
>   if (conn != null && !conn.isUsable()) {
>     return conn;
>   }
> }
> {code}
> Here "!conn.isUsable()" should be "conn.isUsable()".



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