[
https://issues.apache.org/jira/browse/DRILL-5270?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16467733#comment-16467733
]
ASF GitHub Bot commented on DRILL-5270:
---------------------------------------
kkhatua commented on issue #1250: DRILL-5270: Improve loading of profiles
listing in the WebUI
URL: https://github.com/apache/drill/pull/1250#issuecomment-387483281
I did consider using the Gauva Cache initially, but I could not figure out
how to specify the eviction policy based on the profile name. Guava provides a
mechanism to limit the cache size and evict the oldest entry, but I wanted to
override the mechanism that defines 'oldest'. Lastly, the TreeSet allows us to
access the elements in a sorted order, which seemed missing in Guava.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
> 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.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
