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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-5270) Improve loading of profiles listing in the WebUI
Date Fri, 17 May 2019 21:54:00 GMT

    [ https://issues.apache.org/jira/browse/DRILL-5270?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16842636#comment-16842636
] 

ASF GitHub Bot commented on DRILL-5270:
---------------------------------------

kkhatua commented on pull request #1654: DRILL-5270: Improve loading of profiles listing in
the WebUI
URL: https://github.com/apache/drill/pull/1654
 
 
   
 
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> Improve loading of profiles listing in the WebUI
> ------------------------------------------------
>
>                 Key: DRILL-5270
>                 URL: https://issues.apache.org/jira/browse/DRILL-5270
>             Project: Apache Drill
>          Issue Type: Improvement
>          Components: Web Server
>    Affects Versions: 1.9.0
>            Reporter: Kunal Khatua
>            Assignee: Kunal Khatua
>            Priority: Major
>             Fix For: 1.17.0
>
>
> Currently, as the number of profiles increase, we reload the same list of profiles from
the FS.
> An ideal improvement would be to detect if there are any new profiles and only reload
from the disk then. Otherwise, a cached list is sufficient.
> For a directory of 280K profiles, the load time is close to 6 seconds on a 32 core server.
With the caching, we can get it down to as much as a few milliseconds.
> To render the cache as invalid, we inspect the last modified time of the directory to
confirm whether a reload is needed. 



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