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From "Hive QA (Jira)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-22252) Fix caught NullPointerExceptions generated during EXPLAIN
Date Sat, 28 Sep 2019 22:07:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-22252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16940165#comment-16940165
] 

Hive QA commented on HIVE-22252:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12981589/HIVE-22252.1.patch

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

{color:red}ERROR:{color} -1 due to 1 failed/errored test(s), 17010 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.llap.cache.TestBuddyAllocator.testMTT[2] (batchId=363)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/18775/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/18775/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-18775/

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: 1 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12981589 - PreCommit-HIVE-Build

> Fix caught NullPointerExceptions generated during EXPLAIN
> ---------------------------------------------------------
>
>                 Key: HIVE-22252
>                 URL: https://issues.apache.org/jira/browse/HIVE-22252
>             Project: Hive
>          Issue Type: Bug
>            Reporter: John Sherman
>            Assignee: John Sherman
>            Priority: Minor
>         Attachments: HIVE-22252.1.patch
>
>
> While debugging an issue I noticed that during EXPLAIN the following methods throw a
NullPointerException:
> VectorColumnOutputMapping::finalize
> AbstractOperatorDesc::getUserLevelStatistics
> AbstractOperatorDesc::getColumnExprMapForExplain
> The exceptions do end up getting caught but we should add null checks and gracefully
to be less wasteful and to aid future debugging.
>  



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