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From "Vandana Ayyalasomayajula (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-8410) Basic quota support for namespaces
Date Tue, 10 Sep 2013 23:17:52 GMT

     [ 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_8.patch

Addressed Stack's comments. 

1. Renamed NamespaceDescriptorRetriever to NamespaceDescriptors. 

2. Changed the return type of list to Map<String, NamespaceDescriptor>

3. Renamed NamespaceController to NamespaceAuditor

4. Made NamespaceTableAndRegionInfo to be package private. Only the NamespaceAuditor class
is using for now. 

5. The ZK namespace manager initializes the cache and registers listener. No stop is required.


                
> 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,
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
>
>
> 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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