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From "Hive QA (Jira)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-22591) Make single metastore call to fetch all column stats instead of separate call for each column
Date Sat, 07 Dec 2019 10:39:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-22591?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16990431#comment-16990431
] 

Hive QA commented on HIVE-22591:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12987698/HIVE-22591.1.patch

{color:red}ERROR:{color} -1 due to no test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 2 failed/errored test(s), 17760 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[remove_exprs_stats] (batchId=98)
org.apache.hadoop.hive.cli.TestContribCliDriver.testCliDriver[url_hook] (batchId=296)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/19790/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/19790/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-19790/

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
Tests exited with: TestsFailedException: 2 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12987698 - PreCommit-HIVE-Build

> Make single metastore call to fetch all column stats instead of separate call for each
column
> ---------------------------------------------------------------------------------------------
>
>                 Key: HIVE-22591
>                 URL: https://issues.apache.org/jira/browse/HIVE-22591
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Planning
>            Reporter: Vineet Garg
>            Assignee: Vineet Garg
>            Priority: Major
>         Attachments: HIVE-22591.1.patch
>
>
> Currently HiveRelFieldTrimmer has the ability to fetch (and trigger cache) column stats
in single call. 
> HiveReduceExpressionsWithStatsRule on the other hand has to use column stats on demand,
as a result it makes single call for each column.
> This should be moved after RelFieldTrimmer so that RelFieldTrimmer has all the column
stats cached.



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