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https://issues.apache.org/jira/browse/DRILL-5270?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16384066#comment-16384066
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ASF GitHub Bot commented on DRILL-5270:
---------------------------------------

Github user kkhatua commented on the issue:

    https://github.com/apache/drill/pull/755
  
    @arina-ielchiieva I need to rebase this on top of the latest master 
considering it was originally based on nearly a year old code. When ready, i'll 
create a new PR or push to this one. Let me know which one works.


> 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: 1.14.0
>
>
> 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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