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From "Jerry He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17194) Assign the new region to the idle server after splitting
Date Thu, 01 Dec 2016 19:43:58 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15712883#comment-15712883
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Jerry He commented on HBASE-17194:
----------------------------------

Patch looks good. 
one small thing, what about the case servers.size() = 0
{noformat}
-    int numServers = servers == null ? 0 : servers.size();
-    if (numServers == 0) {
+    if (servers == null) {
{noformat}

> Assign the new region to the idle server after splitting
> --------------------------------------------------------
>
>                 Key: HBASE-17194
>                 URL: https://issues.apache.org/jira/browse/HBASE-17194
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 2.0.0
>            Reporter: ChiaPing Tsai
>            Assignee: ChiaPing Tsai
>            Priority: Minor
>             Fix For: 2.0.0
>
>         Attachments: HBASE-17194.v0.patch, HBASE-17194.v1.patch, HBASE-17194.v2.patch,
evaluation-v0.png, tests.xlsx
>
>
> The new regions are assigned to the random servers after splitting, but there always
are some idle servers which don’t be assigned any regions on the new cluster. It is a bad
start of load balance, hence we should give priority to the idle servers for assignment.



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