hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8410) Basic quota support for namespaces
Date Mon, 19 Aug 2013 22:31:48 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13744374#comment-13744374
] 

Ted Yu commented on HBASE-8410:
-------------------------------

{code}
+      return zkNamespaceManager;
+    } else {
+      throw new IOException("ZKNamespaceManager found to be null.");
{code}
nit: 'else' keyword is not needed.

In NamespaceController:
{code}
+    } else if (e instanceof RegionServerCoprocessorEnvironment) {
+      RegionServerCoprocessorEnvironment rsEnv = (RegionServerCoprocessorEnvironment) e;
+      zk = rsEnv.getRegionServerServices().getZooKeeper();
+      zkManager = new ZKNamespaceManager(zk);
+      zkManager.start();
+    } else if (e instanceof RegionCoprocessorEnvironment) {
+      // if running at region
+      RegionCoprocessorEnvironment regionEnv = (RegionCoprocessorEnvironment) e;
+      zk = regionEnv.getRegionServerServices().getZooKeeper();
+      zkManager = new ZKNamespaceManager(zk);
{code}
If I read the above correctly, there would be n+1 ZKNamespaceManager's running in region server
where n is the number of online regions for that server ?
                
> 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. 

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message