Github user brkyvz commented on a diff in the pull request:
https://github.com/apache/spark/pull/15730#discussion_r95208225
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/linalg/distributed/BlockMatrix.scala
---
@@ -459,14 +464,22 @@ class BlockMatrix @Since("1.3.0") (
*/
@Since("1.3.0")
def multiply(other: BlockMatrix): BlockMatrix = {
+ multiply(other, 1)
+ }
+
+ @Since("2.1.0")
+ def multiply(
+ other: BlockMatrix,
+ numMidDimSplits: Int): BlockMatrix = {
--- End diff --
Could you please add documentation for this? This is the most important
part about this PR, understanding how this parameter improves performance. You
may copy most of your PR description
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