[jira] [Commented] (HBASE-20613) Limiting region count results in large size regions

["Biju Nair (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-20613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16484380#comment-16484380 ] 

Biju Nair commented on HBASE-20613:
-----------------------------------

Also this leaves {{regions}} in {{SPLITTING}} state. This is noticed by running {{PE }} {{sequentialWrite}} and the last region (which meets the region limit) which grows in size is left in {{splitting}} state.

> Limiting region count results in large size regions
> ---------------------------------------------------
>
>                 Key: HBASE-20613
>                 URL: https://issues.apache.org/jira/browse/HBASE-20613
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>            Reporter: Biju Nair
>            Priority: Major
>
> Restricting the total number of regions in a {{namespace}}, results in large regions. Not sure whether it is by design i.e. restrict the number of region even if the region sizes grow large. Steps to recreate.
>  - Create a namespace with restriction on the number of regions
> {noformat}
> create_namespace 'ns2', {'hbase.namespace.quota.maxtables'=>'2','hbase.namespace.quota.maxregions'=>'5'}{noformat}
>  - Create a table and run {{PE}} to load data. The table can be created with a small _hbase_._hregion_._max_._filesize_
>  - After 5 regions, the region size grows beyond _hbase_._hregion_._max_._filesize._ Since the region count restriction prevents splits, the region size grows
> Will it be better to gracefully error out when regions can't be split? 



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)