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https://issues.apache.org/jira/browse/HIVE-20621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16625017#comment-16625017
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Hive QA commented on HIVE-20621:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12940874/HIVE-20621.2.patch
{color:red}ERROR:{color} -1 due to no test(s) being added or modified.
{color:green}SUCCESS:{color} +1 due to 14993 tests passed
Test results:
https://builds.apache.org/job/PreCommit-HIVE-Build/13994/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/13994/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-13994/
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.YetusPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12940874 - PreCommit-HIVE-Build
> GetOperationStatus called in resultset.next causing incremental slowness
> ------------------------------------------------------------------------
>
> Key: HIVE-20621
> URL: https://issues.apache.org/jira/browse/HIVE-20621
> Project: Hive
> Issue Type: Bug
> Components: JDBC
> Affects Versions: 4.0.0, 3.2.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Priority: Major
> Attachments: HIVE-20621.1.patch, HIVE-20621.2.patch
>
>
> Fetching result set for a result cache hit query gets slower as more rows are
> fetched. For fetching 10 row result set it took about 900ms but fetching 200
> row result set took 8 seconds.
> Reason for this slowness is GetOperationStatus is invoked inside
> resultset.next() and it happens for every row even after operation has
> completed. This is one RPC call per row fetched (there is also connection
> overhead without keepalive).
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