Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/19078#discussion_r136249083
--- Diff: mllib/src/main/scala/org/apache/spark/mllib/feature/PCA.scala ---
@@ -44,6 +44,11 @@ class PCA @Since("1.4.0") (@Since("1.4.0") val k: Int) {
require(k <= numFeatures,
s"source vector size $numFeatures must be no less than k=$k")
+ require(PCAUtil.memoryCost(k, numFeatures) <= Int.MaxValue,
--- End diff --
As long as you're making updates...how about making this strict inequality?
(I could imagine boundary issues with indexing somewhere in Breeze or MLlib.)
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
