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https://issues.apache.org/jira/browse/HIVE-22252?focusedWorklogId=321382&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-321382
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ASF GitHub Bot logged work on HIVE-22252:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 01/Oct/19 17:28
Start Date: 01/Oct/19 17:28
Worklog Time Spent: 10m
Work Description: jfsii commented on pull request #799: HIVE-22252: Fix
caught NullPointerExceptions generated during EXPLAIN
URL: https://github.com/apache/hive/pull/799
Waiting for a green pass from CI. (Last run failed due to flaky MTT test)
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Issue Time Tracking
-------------------
Worklog Id: (was: 321382)
Remaining Estimate: 0h
Time Spent: 10m
> 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
> Labels: pull-request-available
> Attachments: HIVE-22252.1.patch, HIVE-22252.2.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> 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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