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From Lars George <lars.geo...@gmail.com>
Subject Re: [jira] Resolved: (HBASE-2133) Increase default number of client handlers
Date Sun, 17 Jan 2010 18:17:08 GMT
Hi Andrew,

I have it at 30. What I would like to know is how to detect this sort
of shortage? I also have the feeling we need this sort of indicators
as metrics to the various servers so that the max and current can be
graphed. What do you think?

Thanks,
Lars

On Sat, Jan 16, 2010 at 2:02 AM, Andrew Purtell (JIRA) <jira@apache.org> wrote:
>
>     [ https://issues.apache.org/jira/browse/HBASE-2133?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
>
> Andrew Purtell resolved HBASE-2133.
> -----------------------------------
>
>      Resolution: Fixed
>    Hadoop Flags: [Reviewed]
>
> Committed following change to trunk and 0.20 branch:
> \\
> {noformat}
> --- conf/hbase-default.xml      (revision 899849)
> +++ conf/hbase-default.xml      (working copy)
> @@ -153,10 +153,10 @@
>   </property>
>   <property>
>     <name>hbase.regionserver.handler.count</name>
> -    <value>10</value>
> +    <value>25</value>
>     <description>Count of RPC Server instances spun up on RegionServers
>     Same property is used by the HMaster for count of master handlers.
> -    Default is 10.
> +    Default is 25.
>     </description>
>   </property>
>   <property>
> {noformat}
>
> We might want to increase this again depending on user feedback. I know I needed 100
to avoid trouble with high read/write load once above ~200 regions/server.
>
>> Increase default number of client handlers
>> ------------------------------------------
>>
>>                 Key: HBASE-2133
>>                 URL: https://issues.apache.org/jira/browse/HBASE-2133
>>             Project: Hadoop HBase
>>          Issue Type: Improvement
>>            Reporter: Andrew Purtell
>>            Assignee: Andrew Purtell
>>             Fix For: 0.20.3, 0.21.0
>>
>>
>> Any reason not to just go ahead and change hbase-default.xml to include:
>> {noformat}
>> <property>
>>     <name>hbase.regionserver.handler.count</name>
>>     <value>100</value>
>> </property>
>> <property>
>>     <name>hbase.zookeeper.property.maxClientCnxns</name>
>>     <value>100</value>
>> </property>
>> {noformat}
>> ?
>> The current default for both, 10, is anemic.
>
> --
> This message is automatically generated by JIRA.
> -
> You can reply to this email to add a comment to the issue online.
>
>

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