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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-11775) Implement limit push down through union all in CBO
Date Fri, 18 Dec 2015 15:15:46 GMT

    [ https://issues.apache.org/jira/browse/HIVE-11775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15064067#comment-15064067
] 

Hive QA commented on HIVE-11775:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12778367/HIVE-11775.12.patch

{color:green}SUCCESS:{color} +1 due to 3 test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 16 failed/errored test(s), 9966 tests executed
*Failed tests:*
{noformat}
TestHWISessionManager - did not produce a TEST-*.xml file
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_auto_join_stats2
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_cbo_SortUnionTransposeRule
org.apache.hadoop.hive.cli.TestEncryptedHDFSCliDriver.testCliDriver_encryption_insert_partition_dynamic
org.apache.hadoop.hive.cli.TestNegativeCliDriver.testNegativeCliDriver_authorization_uri_import
org.apache.hadoop.hive.ql.exec.spark.session.TestSparkSessionManagerImpl.testMultiSessionMultipleUse
org.apache.hadoop.hive.ql.exec.spark.session.TestSparkSessionManagerImpl.testSingleSessionMultipleUse
org.apache.hive.jdbc.TestSSL.testSSLVersion
org.apache.hive.spark.client.TestSparkClient.testAddJarsAndFiles
org.apache.hive.spark.client.TestSparkClient.testCounters
org.apache.hive.spark.client.TestSparkClient.testErrorJob
org.apache.hive.spark.client.TestSparkClient.testJobSubmission
org.apache.hive.spark.client.TestSparkClient.testMetricsCollection
org.apache.hive.spark.client.TestSparkClient.testRemoteClient
org.apache.hive.spark.client.TestSparkClient.testSimpleSparkJob
org.apache.hive.spark.client.TestSparkClient.testSyncRpc
{noformat}

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/6395/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/6395/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-6395/

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: 16 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12778367 - PreCommit-HIVE-TRUNK-Build

> Implement limit push down through union all in CBO
> --------------------------------------------------
>
>                 Key: HIVE-11775
>                 URL: https://issues.apache.org/jira/browse/HIVE-11775
>             Project: Hive
>          Issue Type: New Feature
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>         Attachments: HIVE-11775.01.patch, HIVE-11775.02.patch, HIVE-11775.03.patch, HIVE-11775.04.patch,
HIVE-11775.05.patch, HIVE-11775.06.patch, HIVE-11775.07.patch, HIVE-11775.08.patch, HIVE-11775.09.patch,
HIVE-11775.10.patch, HIVE-11775.11.patch, HIVE-11775.12.patch
>
>
> Enlightened by HIVE-11684 (Kudos to [~jcamachorodriguez]), we can actually push limit
down through union all, which reduces the intermediate number of rows in union branches. 



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