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https://issues.apache.org/jira/browse/HBASE-12451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15547030#comment-15547030
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Hadoop QA commented on HBASE-12451:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 0s
{color} | {color:blue} Docker mode activated. {color} |
| {color:blue}0{color} | {color:blue} patch {color} | {color:blue} 0m 2s
{color} | {color:blue} The patch file was not named according to hbase's naming
conventions. Please see
https://yetus.apache.org/documentation/0.3.0/precommit-patchnames for
instructions. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 5s {color}
| {color:red} HBASE-12451 does not apply to master. Rebase required? Wrong
Branch? See https://yetus.apache.org/documentation/0.3.0/precommit-patchnames
for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12734124/HBASE-12451-v2.diff |
| JIRA Issue | HBASE-12451 |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/3822/console |
| Powered by | Apache Yetus 0.3.0 http://yetus.apache.org |
This message was automatically generated.
> IncreasingToUpperBoundRegionSplitPolicy may cause unnecessary region splits
> in rolling update of cluster
> --------------------------------------------------------------------------------------------------------
>
> Key: HBASE-12451
> URL: https://issues.apache.org/jira/browse/HBASE-12451
> Project: HBase
> Issue Type: Bug
> Reporter: Liu Shaohui
> Assignee: Liu Shaohui
> Priority: Minor
> Fix For: 2.0.0
>
> Attachments: HBASE-12451-v1.diff, HBASE-12451-v2.diff
>
>
> Currently IncreasingToUpperBoundRegionSplitPolicy is the default region split
> policy. In this policy, split size is the number of regions that are on this
> server that all are of the same table, cubed, times 2x the region flush size.
> But when unloading regions of a regionserver in a cluster using
> region_mover.rb, the number of regions that are on this server that all are
> of the same table will decrease, and the split size will decrease too, which
> may cause the left region split in the regionsever. Region Splits also
> happens when loading regions of a regionserver in a cluster.
> A improvment may set a minimum split size in
> IncreasingToUpperBoundRegionSplitPolicy
> Suggestions are welcomed. Thanks~
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