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From "Ashish Singhi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8410) Basic quota support for namespaces
Date Sat, 28 Mar 2015 18:15:55 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14385447#comment-14385447
] 

Ashish Singhi commented on HBASE-8410:
--------------------------------------

In the release note example we need to correct the command used, there is no shell command
{{namespace_create}} instead it should be {{create_namespace}}.
Also if possible can we also mention in the example how a user can unset the maxtable/maxregions
in the namespace
{code}alter_namespace 'ns3', {METHOD => 'unset', 'hbase.namespace.quota.maxtables'} {code}

> 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
>             Fix For: 2.0.0
>
>         Attachments: 8410-master.9.patch, HBASE-8410-master.1.patch, HBASE-8410-master.4.patch,
HBASE-8410-master.5.patch, HBASE-8410-master.6.patch, HBASE-8410-master.7.patch, HBASE-8410-master.9.patch,
HBASE-8410-master.patch, HBASE-8410.docx, HBASE-8410_trunk_14.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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