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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Work logged] (HIVE-21279) Avoid moving/rename operation in FileSink op for SELECT queries
Date Fri, 12 Apr 2019 23:05:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-21279?focusedWorklogId=227006&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-227006
]

ASF GitHub Bot logged work on HIVE-21279:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 12/Apr/19 23:04
            Start Date: 12/Apr/19 23:04
    Worklog Time Spent: 10m 
      Work Description: vineetgarg02 commented on issue #582: Hive 21386: Extend the fetch
task enhancement done in HIVE-21279 to make it work with query result cache
URL: https://github.com/apache/hive/pull/582#issuecomment-482748369
 
 
   Merged
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 227006)
    Time Spent: 2h 50m  (was: 2h 40m)

> Avoid moving/rename operation in FileSink op for SELECT queries
> ---------------------------------------------------------------
>
>                 Key: HIVE-21279
>                 URL: https://issues.apache.org/jira/browse/HIVE-21279
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Planning
>            Reporter: Vineet Garg
>            Assignee: Vineet Garg
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.0.0
>
>         Attachments: HIVE-21279.1.patch, HIVE-21279.10.patch, HIVE-21279.11.patch, HIVE-21279.12.patch,
HIVE-21279.13.patch, HIVE-21279.2.patch, HIVE-21279.3.patch, HIVE-21279.4.patch, HIVE-21279.5.patch,
HIVE-21279.6.patch, HIVE-21279.7.patch, HIVE-21279.8.patch, HIVE-21279.9.patch
>
>          Time Spent: 2h 50m
>  Remaining Estimate: 0h
>
> Currently at the end of a job FileSink operator moves/rename temp directory to another
directory from which FetchTask fetches result. This is done to avoid fetching potential partial/invalid
files by failed/runway tasks. This operation is expensive for cloud storage. It could be avoided
if FetchTask is passed on set of files to read from instead of whole directory.



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