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From "Hive QA (JIRA)" <>
Subject [jira] [Commented] (HIVE-17139) Conditional expressions optimization: skip the expression evaluation if the condition is not satisfied for vectorization engine.
Date Thu, 28 Sep 2017 15:52:00 GMT


Hive QA commented on HIVE-17139:

Here are the results of testing the latest attachment:

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

{color:red}ERROR:{color} -1 due to 7 failed/errored test(s), 11088 tests executed
*Failed tests:*
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[optimize_nullscan] (batchId=162)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[union_fast_stats] (batchId=157)
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver[explainanalyze_2] (batchId=101)
org.apache.hadoop.hive.cli.TestPerfCliDriver.testCliDriver[query14] (batchId=236)

Test results:
Console output:
Test logs:

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: 7 tests failed

This message is automatically generated.

ATTACHMENT ID: 12889222 - PreCommit-HIVE-Build

> Conditional expressions optimization: skip the expression evaluation if the condition
is not satisfied for vectorization engine.
> --------------------------------------------------------------------------------------------------------------------------------
>                 Key: HIVE-17139
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Ke Jia
>            Assignee: Ke Jia
>         Attachments: HIVE-17139.10.patch, HIVE-17139.11.patch, HIVE-17139.12.patch, HIVE-17139.13.patch,
HIVE-17139.13.patch, HIVE-17139.14.patch, HIVE-17139.15.patch, HIVE-17139.16.patch, HIVE-17139.17.patch,
HIVE-17139.1.patch, HIVE-17139.2.patch, HIVE-17139.3.patch, HIVE-17139.4.patch, HIVE-17139.5.patch,
HIVE-17139.6.patch, HIVE-17139.7.patch, HIVE-17139.8.patch, HIVE-17139.9.patch
> The case when and if statement execution for Hive vectorization is not optimal, which
all the conditional and else expressions are evaluated for current implementation. The optimized
approach is to update the selected array of batch parameter after the conditional expression
is executed. Then the else expression will only do the selected rows instead of all.

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