hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Zhihong Yu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-5970) Improve the AssignmentManager#updateTimer and speed up handling opened event
Date Wed, 09 May 2012 05:56:34 GMT

     [ https://issues.apache.org/jira/browse/HBASE-5970?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zhihong Yu updated HBASE-5970:
------------------------------

     Description: 
We found handing opened event very slow in the environment with lots of regions.

The problem is the slow AssignmentManager#updateTimer.

We do the test for bulk assigning 10w (i.e. 100k) regions, the whole process of bulk assigning
took 1 hours.

2012-05-06 20:31:49,201 INFO org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning
100000 region(s) round-robin across 5 server(s)
2012-05-06 21:26:32,103 INFO org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning
done

I think we could do the improvement for the AssignmentManager#updateTimer: Make a thread do
this work.
After the improvement, it took only 4.5mins

2012-05-07 11:03:36,581 INFO org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning
100000 region(s) across 5 server(s), retainAssignment=true 
2012-05-07 11:07:57,073 INFO org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning
done 

  was:
We found handing opened event very slow in the environment with lots of regions.

The problem is the slow AssignmentManager#updateTimer.

We do the test for bulk assigning 10w regions, the whole process of bulk assigning took 1
hours.

2012-05-06 20:31:49,201 INFO org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning
100000 region(s) round-robin across 5 server(s)
2012-05-06 21:26:32,103 INFO org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning
done

I think we could do the improvement for the AssignmentManager#updateTimer: Make a thread do
this work.
After the improvement, it took only 4.5mins

2012-05-07 11:03:36,581 INFO org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning
100000 region(s) across 5 server(s), retainAssignment=true 
2012-05-07 11:07:57,073 INFO org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning
done 

    Hadoop Flags: Reviewed
    
> Improve the AssignmentManager#updateTimer and speed up handling opened event
> ----------------------------------------------------------------------------
>
>                 Key: HBASE-5970
>                 URL: https://issues.apache.org/jira/browse/HBASE-5970
>             Project: HBase
>          Issue Type: Improvement
>          Components: master
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>         Attachments: HBASE-5970.patch
>
>
> We found handing opened event very slow in the environment with lots of regions.
> The problem is the slow AssignmentManager#updateTimer.
> We do the test for bulk assigning 10w (i.e. 100k) regions, the whole process of bulk
assigning took 1 hours.
> 2012-05-06 20:31:49,201 INFO org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning
100000 region(s) round-robin across 5 server(s)
> 2012-05-06 21:26:32,103 INFO org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning
done
> I think we could do the improvement for the AssignmentManager#updateTimer: Make a thread
do this work.
> After the improvement, it took only 4.5mins
> 2012-05-07 11:03:36,581 INFO org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning
100000 region(s) across 5 server(s), retainAssignment=true 
> 2012-05-07 11:07:57,073 INFO org.apache.hadoop.hbase.master.AssignmentManager: Bulk assigning
done 

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message