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https://issues.apache.org/jira/browse/HIVE-20279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16572395#comment-16572395
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Hive QA commented on HIVE-20279:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12934697/HIVE-20279.1.patch
{color:red}ERROR:{color} -1 due to no test(s) being added or modified.
{color:green}SUCCESS:{color} +1 due to 14868 tests passed
Test results:
https://builds.apache.org/job/PreCommit-HIVE-Build/13087/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/13087/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-13087/
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: 12934697 - PreCommit-HIVE-Build
> HiveContextAwareRecordReader slows down Druid Scan queries.
> ------------------------------------------------------------
>
> Key: HIVE-20279
> URL: https://issues.apache.org/jira/browse/HIVE-20279
> Project: Hive
> Issue Type: Improvement
> Reporter: Nishant Bangarwa
> Assignee: Nishant Bangarwa
> Priority: Major
> Attachments: HIVE-20279.1.patch, HIVE-20279.patch, scan2.svg
>
>
> HiveContextAwareRecordReader add lots of overhead for Druid Scan Queries.
> See attached flame graph.
> Looks like the operations for checking for existence of footer/header buffer
> takes most of time For druid and other storage handlers that do not have
> footer buffer we should skip the logic for checking the existence for storage
> handlers atleast.
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