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https://issues.apache.org/jira/browse/HBASE-25453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17257897#comment-17257897
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Duo Zhang commented on HBASE-25453:
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For ResultScanner, on master branch, it is something like the
AsyncPrefetchScanner, so at the foreground, you just get everything from the
cache, and all the actual rpc request is done in background thread...
And there is no 1v1 mapping on the scanner.next call and the fetching rpc
call...
> Add trace support for scan operation
> ------------------------------------
>
> Key: HBASE-25453
> URL: https://issues.apache.org/jira/browse/HBASE-25453
> Project: HBase
> Issue Type: Sub-task
> Reporter: Duo Zhang
> Priority: Major
>
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