GitHub user hhbyyh opened a pull request:
https://github.com/apache/spark/pull/16020
[SPARK-18596][ML] add checking and caching to bisecting kmeans
## What changes were proposed in this pull request?
jira: https://issues.apache.org/jira/browse/SPARK-18596
This is a follow up for https://issues.apache.org/jira/browse/SPARK-18356.
Check if the DataFrame sent to BisectingKMeans is cached, if not, we need
to cache the converted RDD to ensure performance for BisectingKMeans.
## How was this patch tested?
existing unit tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hhbyyh/spark bikcache
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16020.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 #16020
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commit a4c88ee89f175c0672eeebe004ef3ac87a7a464a
Author: Yuhao Yang <[email protected]>
Date: 2016-11-27T05:34:18Z
add checking and caching to bisecting kmeans
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