[jira] [Updated] (DRILL-5270) Improve loading of profiles listing in the WebUI

["Arina Ielchiieva (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-5270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arina Ielchiieva updated DRILL-5270:
------------------------------------
    Reviewer: Arina Ielchiieva

> 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
>             Fix For: 1.12.0
>
>
> 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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