[jira] [Updated] (HBASE-8410) Basic quota support for namespaces

["Vandana Ayyalasomayajula (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-8410?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vandana Ayyalasomayajula updated HBASE-8410:
--------------------------------------------

    Attachment: HBASE-8410_trunk_2.patch

1. Rebased  the old patch with the new changed in trunk. 

2. Added an API in the master services to get an instance of ZKNamespace Manager.
                
> 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_1_trunk.patch, HBASE_8410.patch, HBASE-8410_trunk_2.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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