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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-11306) Add a bloom-1 filter for Hybrid MapJoin spills
Date Sat, 26 Sep 2015 16:48:04 GMT

    [ https://issues.apache.org/jira/browse/HIVE-11306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14909341#comment-14909341
] 

Hive QA commented on HIVE-11306:
--------------------------------



{color:red}Overall{color}: -1 at least one tests failed

Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12762201/HIVE-11306.5.patch

{color:red}ERROR:{color} -1 due to 4 failed/errored test(s), 9620 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_vector_groupby_reduce
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_vector_groupby_reduce
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_vector_leftsemi_mapjoin
org.apache.hive.hcatalog.api.TestHCatClient.testTableSchemaPropagation
{noformat}

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/5425/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/5425/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-5425/

Messages:
{noformat}
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: 12762201 - PreCommit-HIVE-TRUNK-Build

> Add a bloom-1 filter for Hybrid MapJoin spills
> ----------------------------------------------
>
>                 Key: HIVE-11306
>                 URL: https://issues.apache.org/jira/browse/HIVE-11306
>             Project: Hive
>          Issue Type: Improvement
>          Components: Hive
>    Affects Versions: 1.3.0, 2.0.0
>            Reporter: Gopal V
>            Assignee: Wei Zheng
>         Attachments: HIVE-11306.1.patch, HIVE-11306.2.patch, HIVE-11306.3.patch, HIVE-11306.5.patch
>
>
> HIVE-9277 implemented Spillable joins for Tez, which suffers from a corner-case performance
issue when joining wide small tables against a narrow big table (like a user info table join
events stream).
> The fact that the wide table is spilled causes extra IO, even though the nDV of the join
key might be in the thousands.
> A cheap bloom-1 filter would add a massive performance gain for such queries, massively
cutting down on the spill IO costs for the big-table spills.



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