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https://issues.apache.org/jira/browse/HBASE-8410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13867114#comment-13867114
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Vandana Ayyalasomayajula commented on HBASE-8410:
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[[email protected]] -- Would you be able to do a fresh review ? I have changed
the code quite a bit from your previous review. Thanks!
[[email protected]] -- With the latest patch, meta is not scanned every
time, only once after master starts up. In your previous comments, you wanted
to know why ZK namespace manager is required in the RS. The auditor runs in
the master and all the region servers. So instead of starting zk namepsace
manager on all the regions, I had it the RS, so that all the regions belonging
to the RS can shared it.
> 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_trunk_10.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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