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https://issues.apache.org/jira/browse/HBASE-8410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13943664#comment-13943664
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Vandana Ayyalasomayajula commented on HBASE-8410:
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[~stack] If we are looking at alternative to disabling table to avoid region
splits, how can the master control a region from splitting ? In my
understanding, region splits are controlled at the region server level. Please
help me in case I am missing any links.
> Basic quota support for namespaces
> ----------------------------------
>
> Key: HBASE-8410
> URL: https://issues.apache.org/jira/browse/HBASE-8410
> Project: HBase
> Issue Type: Sub-task
> Reporter: Francis Liu
> Assignee: Vandana Ayyalasomayajula
> Attachments: HBASE-8410.docx, HBASE-8410_trunk_10.patch,
> HBASE-8410_trunk_10.patch, HBASE-8410_trunk_11.patch,
> HBASE-8410_trunk_12.patch, HBASE-8410_trunk_13.patch,
> HBASE-8410_trunk_14.patch, HBASE-8410_trunk_15.patch,
> HBASE-8410_trunk_2.patch, HBASE-8410_trunk_3.patch, HBASE-8410_trunk_4.patch,
> HBASE-8410_trunk_4.patch, HBASE-8410_trunk_5.patch, HBASE-8410_trunk_6.patch,
> HBASE-8410_trunk_7.patch, HBASE-8410_trunk_8.patch, HBASE-8410_trunk_9.patch,
> HBASE_8410.patch, HBASE_8410_1_trunk.patch
>
>
> This task involves creating an observer which provides basic quota support to
> namespaces in terms of (1) number of tables and (2) number of regions. The
> quota support can be enabled by setting:
> <property>
> <name>hbase.coprocessor.region.classes</name>
> <value>org.apache.hadoop.hbase.namespace.NamespaceController</value>
> </property>
> <property>
> <name>hbase.coprocessor.master.classes</name>
> <value>org.apache.hadoop.hbase.namespace.NamespaceController</value>
> </property>
> in the hbase-site.xml.
> To add quotas to namespace, while creating namespace properties need to be
> added.
> Examples:
> 1. namespace_create 'ns1', {'hbase.namespace.quota.maxregion'=>'10'}
> 2. 1. namespace_create 'ns2', {'hbase.namespace.quota.maxtables'=>'2'},
> {'hbase.namespace.quota.maxregion'=>'5'}
> The quotas can be modified/added to namespace at any point of time.
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