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Posted to issues@hbase.apache.org by "Hudson (Jira)" <ji...@apache.org> on 2021/01/20 11:58:00 UTC

[jira] [Commented] (HBASE-25513) When the table is turned on normalize, the first region may not be merged even the size is 0

    [ https://issues.apache.org/jira/browse/HBASE-25513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17268537#comment-17268537 ] 

Hudson commented on HBASE-25513:
--------------------------------

Results for branch master
	[build #191 on builds.a.o|https://ci-hadoop.apache.org/job/HBase/job/HBase%20Nightly/job/master/191/]: (x) *{color:red}-1 overall{color}*
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details (if available):

(/) {color:green}+1 general checks{color}
-- For more information [see general report|https://ci-hadoop.apache.org/job/HBase/job/HBase%20Nightly/job/master/191/General_20Nightly_20Build_20Report/]






(x) {color:red}-1 jdk8 hadoop3 checks{color}
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(/) {color:green}+1 jdk11 hadoop3 checks{color}
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(/) {color:green}+1 source release artifact{color}
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(/) {color:green}+1 client integration test{color}


> When the table is turned on normalize, the first region may not be merged even the size is 0
> --------------------------------------------------------------------------------------------
>
>                 Key: HBASE-25513
>                 URL: https://issues.apache.org/jira/browse/HBASE-25513
>             Project: HBase
>          Issue Type: Bug
>          Components: Normalizer
>    Affects Versions: 3.0.0-alpha-1, 2.4.1
>            Reporter: Baiqiang Zhao
>            Assignee: Baiqiang Zhao
>            Priority: Major
>             Fix For: 3.0.0-alpha-1, 2.4.2
>
>
> Suppose a table has 8 regions, the sizes are [0, 10, 1, 0, 9, 0, 12, 0], the average region size is 4, and split is disabled.
> The current Normalizer can only get three merge plans (use size to represent region):
> [1, 0], [9, 0],[12, 0]
> It can not merge the first region, even it's size is 0.



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