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