[jira] [Comment Edited] (HBASE-26073) Avoid merging regions if tables has not reached the state where regions are not split because of number of regions

["Aman Poonia (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-26073?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17491804#comment-17491804 ] 

Aman Poonia edited comment on HBASE-26073 at 2/14/22, 5:45 AM:
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[~ndimiduk] This is not an issue for us now as we use normalizer in a way that we will not encounter this anymore.

To elaborate more, we configure min number of regions after which normalizer should trigger to a number higher than number of region servers. In few cases the number is as large as twice the number of RS in cluster. 


was (Author: mnpoonia):
[~ndimiduk] This is not an issue for us now as we use normalizer in a way that we will not encounter this anymore.

> Avoid merging regions if tables has not reached the state where regions are not split because of number of regions
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-26073
>                 URL: https://issues.apache.org/jira/browse/HBASE-26073
>             Project: HBase
>          Issue Type: Improvement
>          Components: Normalizer
>    Affects Versions: 1.7.0, 2.4.4
>            Reporter: Aman Poonia
>            Assignee: Aman Poonia
>            Priority: Minor
>
> we have a table on a cluster with 100 regions with default split policy (SteppingSplitPolicy). This is a small table and will not get loaded with too much data. Now if region size of table is smaller than the normalizer target region size than there are chances that normalizer will consider the regions for merges. But since the number of regions are small split policy will trigger split on next flush. This is a continuous loop and our cluster will be busy in these two actions.
> We plan to consider number of regions and number of regionservers in creating plans for normalizer.



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