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From "BELUGA BEHR (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-19834) Clear Context Map of Paths to ContentSummary
Date Tue, 10 Jul 2018 19:07:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-19834?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

BELUGA BEHR updated HIVE-19834:
-------------------------------
    Attachment: HIVE-19834.2.patch

> Clear Context Map of Paths to ContentSummary
> --------------------------------------------
>
>                 Key: HIVE-19834
>                 URL: https://issues.apache.org/jira/browse/HIVE-19834
>             Project: Hive
>          Issue Type: Improvement
>          Components: HiveServer2
>    Affects Versions: 3.0.0, 2.3.2, 4.0.0
>            Reporter: BELUGA BEHR
>            Assignee: BELUGA BEHR
>            Priority: Minor
>         Attachments: HIVE-19834.1.patch, HIVE-19834.2.patch
>
>
> The {{Context}} class has a {{clear}} method which is called.  During the method, various
files are deleted and in-memory maps are cleared.  I would like to propose that we clear out
an additional in-memory map structure that may contain a lot of data so that it can be GC'ed
asap. This map contains mapping of "File Path"->"Content Summary".  For a query with a
large file set, this can be quite large.



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