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https://issues.apache.org/jira/browse/DRILL-5270?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15877200#comment-15877200
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ASF GitHub Bot commented on DRILL-5270:
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GitHub user kkhatua opened a pull request:
https://github.com/apache/drill/pull/755
DRILL-5270: Improve loading of profiles listing in the WebUI
Using Hadoop API to filter and reduce profile list load time
Using an in-memory treeSet-based cache, maintain the list of most recent
profiles.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/kkhatua/drill DRILL-5270
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/755.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #755
----
commit a5f20643850ad399622e5df9a6f37713545dc7a6
Author: Kunal Khatua <[email protected]>
Date: 2017-02-22T01:20:48Z
DRILL-5270: Improve loading of profiles listing in the WebUI
Using Hadoop API to filter and reduce profile list load time
Using an in-memory treeSet-based cache, maintain the list of most recent
profiles.
----
> 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: 1.10.0
>
>
> 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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