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Posted to issues@hbase.apache.org by "Jeongdae Kim (JIRA)" <ji...@apache.org> on 2019/07/19 08:27:00 UTC

[jira] [Updated] (HBASE-22715) Use scan queues/executors for scans, when RWQueueRpcExecutor used

     [ https://issues.apache.org/jira/browse/HBASE-22715?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jeongdae Kim updated HBASE-22715:
---------------------------------
    Description: 
When we use RWQueueRpcExecutor, all scans should be handled by scan handler threads, not read handler.

 

Before HBASE-17508, when calling openScanner() in client, a region server doesn't make results, just open scanner and return scanner id. So, this request(open) is executed in read handlers intentionally.
  

However, since HBASE-17508,, actual scan behavior happened while opening a scanner,

I think this request should probably be executed in scan handlers when using RWQueueRpcExecutor.

  was:
When we use RWQueueRpcExecutor, all scans should be handled by scan handler threads, not read handler.

 

https://issues.apache.org/jira/browse/HBASE-17508

Before this patch, when calling openScanner() in client, a region server doesn't make results, just open scanner and return scanner id. So, this request(open) is executed in read handlers intentionally.

 

However, since the patch, actual scan behavior happened while opening a scanner,

I think this request should probably be executed in scan handlers when using RWQueueRpcExecutor.


> Use scan queues/executors for scans, when RWQueueRpcExecutor used
> -----------------------------------------------------------------
>
>                 Key: HBASE-22715
>                 URL: https://issues.apache.org/jira/browse/HBASE-22715
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 1.4.10
>            Reporter: Jeongdae Kim
>            Assignee: Jeongdae Kim
>            Priority: Minor
>
> When we use RWQueueRpcExecutor, all scans should be handled by scan handler threads, not read handler.
>  
> Before HBASE-17508, when calling openScanner() in client, a region server doesn't make results, just open scanner and return scanner id. So, this request(open) is executed in read handlers intentionally.
>   
> However, since HBASE-17508,, actual scan behavior happened while opening a scanner,
> I think this request should probably be executed in scan handlers when using RWQueueRpcExecutor.



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