GitHub user vinayshankar opened a pull request:
https://github.com/apache/karaf/pull/337
KARAF-5314 Added a features cache that increases the performance of the
filtering of the required features from the available features.
The performance of the filtering logic decresed when the java streams API
was used in 4.1 compared to for loops in 4.0. I reverted the filtering logic to
use for loops and also introduced a features cache. This increased the
performance by a huge margin, almost 20X faster when there are ~900 available
features and ~300 required features in a highly complex and huge feature
dependency tree.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/vinayshankar/karaf KARAF-5314
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/karaf/pull/337.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 #337
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commit 06366f5db7db26b7b4bd56bcec8d193ff4a975dd
Author: Vinay Shankar (e24113) <[email protected]>
Date: 2017-08-18T18:55:58Z
KARAF-5314 Added a features cache that increases the performance of the
filtering of the required features from the available features.
The performance of the filtering logic decresed when the java streams API
was used in 4.1 compared to for loops in 4.0. I reverted the filtering logic to
use for loops and also introduced a features cache. This increased the
performance by a huge margin, almost 20X faster when there are ~900 available
features and ~300 required features from a highly complex and huge feature
dependency tree.
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