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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-16571) HiveServer2: Prefer LIFO over round-robin for Tez session reuse
Date Fri, 12 May 2017 19:10:04 GMT

    [ https://issues.apache.org/jira/browse/HIVE-16571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16008570#comment-16008570
] 

Hive QA commented on HIVE-16571:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12867730/HIVE-16571.2.patch

{color:green}SUCCESS:{color} +1 due to 1 test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 4 failed/errored test(s), 10698 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[vector_if_expr] (batchId=144)
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver[explainanalyze_3] (batchId=97)
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver[explainuser_3] (batchId=97)
org.apache.hive.jdbc.TestJdbcWithMiniHS2.testAddJarConstructorUnCaching (batchId=225)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/5227/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/5227/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-5227/

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 4 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12867730 - PreCommit-HIVE-Build

> HiveServer2: Prefer LIFO over round-robin for Tez session reuse
> ---------------------------------------------------------------
>
>                 Key: HIVE-16571
>                 URL: https://issues.apache.org/jira/browse/HIVE-16571
>             Project: Hive
>          Issue Type: Improvement
>          Components: HiveServer2, Tez
>    Affects Versions: 3.0.0
>            Reporter: Gopal V
>            Assignee: Gopal V
>         Attachments: HIVE-16571.2.patch, HIVE-16571.patch
>
>
> Currently Tez session reuse is entirely round-robin, which means a single user might
have to run upto 32 queries before reusing a warm session on a HiveServer2.
> This is not the case when session reuse is disabled, with a user warming up their session
on the 1st query.



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