[jira] [Updated] (HBASE-20509) Put List in HashSet directly without using addAll function to improve performance

["Jan Hentschel (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-20509?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jan Hentschel updated HBASE-20509:
----------------------------------
    Fix Version/s: 2.2.2
                   2.1.7
                   2.3.0
                   3.0.0
     Hadoop Flags: Reviewed
       Resolution: Fixed
           Status: Resolved  (was: Patch Available)

Pushed to branch-2.1+. Thanks for the contribution [~taiyinglee].

> Put List in HashSet directly without using addAll function to improve performance
> ---------------------------------------------------------------------------------
>
>                 Key: HBASE-20509
>                 URL: https://issues.apache.org/jira/browse/HBASE-20509
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 3.0.0
>            Reporter: taiyinglee
>            Assignee: taiyinglee
>            Priority: Trivial
>             Fix For: 3.0.0, 2.3.0, 2.1.7, 2.2.2
>
>         Attachments: HBASE-20509.v0.patch
>
>
> [https://docs.oracle.com/javase/7/docs/api/java/util/Collection.html]
> change
> Set<ServerName> serverSet = new HashSet<>();
>  serverSet.addAll(serverList);
> to
> Set<ServerName> serverSet = new HashSet<>(serverList);
> in
> ./hbase-server/src/main/java/org/apache/hadoop/hbase/favored/FavoredNodeAssignmentHelper.java
>  



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