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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-16746) Reduce number of index lookups for same table in IndexWhereTaskDispatcher
Date Wed, 24 May 2017 06:45:04 GMT

    [ https://issues.apache.org/jira/browse/HIVE-16746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16022388#comment-16022388
] 

Hive QA commented on HIVE-16746:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12869580/HIVE-16746.1.patch

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

{color:red}ERROR:{color} -1 due to 4 failed/errored test(s), 10749 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestBeeLineDriver.testCliDriver[materialized_view_create_rewrite]
(batchId=236)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[subquery_scalar] (batchId=151)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[vector_if_expr] (batchId=144)
org.apache.hadoop.hive.ql.security.TestStorageBasedClientSideAuthorizationProvider.testSimplePrivileges
(batchId=218)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/5412/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/5412/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-5412/

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: 12869580 - PreCommit-HIVE-Build

> Reduce number of index lookups for same table in IndexWhereTaskDispatcher
> -------------------------------------------------------------------------
>
>                 Key: HIVE-16746
>                 URL: https://issues.apache.org/jira/browse/HIVE-16746
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Rajesh Balamohan
>            Assignee: Rajesh Balamohan
>            Priority: Minor
>         Attachments: HIVE-16746.1.patch
>
>
> {{IndexWhereTaskDispatcher}} is used when {{hive.optimize.index.filter=true}}. It lists
all indices for the table and depending on the query complexity, this ends up being in the
hotpath. For e.g, Q14 explain plan takes 180-200 seconds and this index querying multiple
times for same tables take up 30-40 seconds. This function was invoked around 24000 times
for same set of tables.



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