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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-15802) ConnectionUtils should use ThreadLocalRandom instead of Random
Date Sun, 22 May 2016 13:56:12 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ted Yu updated HBASE-15802:
---------------------------
       Resolution: Fixed
     Hadoop Flags: Reviewed
    Fix Version/s: 1.4.0
                   2.0.0
           Status: Resolved  (was: Patch Available)

Thanks for the patch, Matt

>  ConnectionUtils should use ThreadLocalRandom instead of Random
> ---------------------------------------------------------------
>
>                 Key: HBASE-15802
>                 URL: https://issues.apache.org/jira/browse/HBASE-15802
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Hiroshi Ikeda
>            Assignee: Matt Warhaftig
>            Priority: Minor
>             Fix For: 2.0.0, 1.4.0
>
>         Attachments: hbase-15802.patch
>
>
> {code}
> public final class ConnectionUtils {
> ...skip...
>   private static final Random RANDOM = new Random();
> {code}
> In general, static fields are accessed by multi-threads. The class Random is thread-safe
but ThreadLocalRandom is more preferable because of less contention.



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