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Posted to issues@hbase.apache.org by "Sahil Aggarwal (JIRA)" <ji...@apache.org> on 2019/01/28 11:58:00 UTC

[jira] [Commented] (HBASE-21186) Document hbase.regionserver.executor.openregion.threads in MTTR section

    [ https://issues.apache.org/jira/browse/HBASE-21186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16753937#comment-16753937 ] 

Sahil Aggarwal commented on HBASE-21186:
----------------------------------------

From my observation with ~ 2200 regions on 4 RS:
 * Master is able to call assign region rpc pretty quick hence didn't find any bottleneck at master side as RS queue up the RPC in the executor unbounded workQueue.
 * Region server was taking too much time in completing the assign region RPC as in parallel it will execute only hbase.regionserver.executor.openregion.threads number of RPCs at a time.
 * Increasing the threads probably only execute more assign region RPC parallely. 

 

Let me check on how Master is making assign region RPC and if depends on any other config too, then probably we can come up with the formula you are suggesting. 

 

 

> Document hbase.regionserver.executor.openregion.threads in MTTR section
> -----------------------------------------------------------------------
>
>                 Key: HBASE-21186
>                 URL: https://issues.apache.org/jira/browse/HBASE-21186
>             Project: HBase
>          Issue Type: Improvement
>          Components: documentation
>            Reporter: Sahil Aggarwal
>            Assignee: Sahil Aggarwal
>            Priority: Minor
>         Attachments: HBASE-21186.master.001.patch, HBASE-21186.master.002.patch
>
>
> hbase.regionserver.executor.openregion.threads helps in improving MTTR by increasing assign rpc processing rate at RS from HMaster but is not documented.



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