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From "John Sherman (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-22252) Fix caught NullPointerExceptions generated during EXPLAIN
Date Fri, 27 Sep 2019 18:20:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-22252?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

John Sherman updated HIVE-22252:
--------------------------------
    Attachment: HIVE-22252.1.patch

> 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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