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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-16602) Implement shared scans with Tez
Date Wed, 10 May 2017 13:56:04 GMT

    [ https://issues.apache.org/jira/browse/HIVE-16602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16004718#comment-16004718
] 

Hive QA commented on HIVE-16602:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12867286/HIVE-16602.02.patch

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

{color:red}ERROR:{color} -1 due to 3 failed/errored test(s), 10663 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestContribNegativeCliDriver.org.apache.hadoop.hive.cli.TestContribNegativeCliDriver
(batchId=233)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[tez_smb_main] (batchId=148)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[vector_if_expr] (batchId=144)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/5165/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/5165/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-5165/

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: 3 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12867286 - PreCommit-HIVE-Build

> Implement shared scans with Tez
> -------------------------------
>
>                 Key: HIVE-16602
>                 URL: https://issues.apache.org/jira/browse/HIVE-16602
>             Project: Hive
>          Issue Type: New Feature
>          Components: Physical Optimizer
>    Affects Versions: 3.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-16602.01.patch, HIVE-16602.02.patch, HIVE-16602.patch
>
>
> Given a query plan, the goal is to identify scans on input tables that can be merged
so the data is read only once. Optimization will be carried out at the physical level.
> In the longer term, identification of equivalent expressions and reutilization of intermediary
results should be done at the logical layer via Spool operator.



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