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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-15131) Change Parquet reader to read metadata on the task side
Date Wed, 18 Jul 2018 18:23:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-15131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16548212#comment-16548212
] 

Hive QA commented on HIVE-15131:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12932031/HIVE-15131.2.patch

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

{color:red}ERROR:{color} -1 due to 2 failed/errored test(s), 14662 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[parquet_analyze] (batchId=24)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[mm_all] (batchId=153)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/12669/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/12669/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-12669/

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.YetusPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 2 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12932031 - PreCommit-HIVE-Build

> Change Parquet reader to read metadata on the task side
> -------------------------------------------------------
>
>                 Key: HIVE-15131
>                 URL: https://issues.apache.org/jira/browse/HIVE-15131
>             Project: Hive
>          Issue Type: Bug
>          Components: Reader
>            Reporter: Chao Sun
>            Assignee: Adesh Kumar Rao
>            Priority: Major
>         Attachments: HIVE-15131.1.patch, HIVE-15131.2.patch
>
>
> Currently the {{ParquetRecordReaderWrapper}} still uses the {{readFooter}} API without
filtering, which means it needs to read metadata about all row groups every time. This could
some issues when input dataset is particularly big and has many columns.
> [Parquet-84|https://issues.apache.org/jira/browse/PARQUET-84] introduced another API
which allows to do row group filtering on the task side. Hive should adopt this API.



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