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From "Sahil Takiar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-20737) Local SparkContext is shared between user sessions and should be closed only when there is no active
Date Thu, 18 Oct 2018 15:18:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-20737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16655398#comment-16655398
] 

Sahil Takiar commented on HIVE-20737:
-------------------------------------

{quote} As the separate JIRA we are planning to refactor SparkSession open/submit functionality
to be an atomic unit. {quote} Can you explain what this means?

> Local SparkContext is shared between user sessions and should be closed only when there
is no active
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-20737
>                 URL: https://issues.apache.org/jira/browse/HIVE-20737
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>            Reporter: Denys Kuzmenko
>            Assignee: Denys Kuzmenko
>            Priority: Major
>         Attachments: HIVE-20737.1.patch, HIVE-20737.10.patch, HIVE-20737.11.patch, HIVE-20737.12.patch,
HIVE-20737.2.patch, HIVE-20737.5.patch, HIVE-20737.6.patch, HIVE-20737.7.patch, HIVE-20737.8.patch,
HIVE-20737.9.patch
>
>
> 1. Local SparkContext is shared between user sessions and should be closed only when
there is no active. 
>  2. Possible race condition in SparkSession.open() in case when user queries run in
parallel within the same session.



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