srowen commented on a change in pull request #32734:
URL: https://github.com/apache/spark/pull/32734#discussion_r643422274
##########
File path:
mllib/src/main/scala/org/apache/spark/mllib/linalg/distributed/RowMatrix.scala
##########
@@ -439,7 +439,8 @@ class RowMatrix @Since("1.0.0") (
" Cannot compute the covariance of a RowMatrix with <= 1 row.")
val mean = Vectors.fromML(summary.mean)
- if (rows.first().isInstanceOf[DenseVector]) {
+ // If all the rows are sparse vectors, then compute based on
`computeSparseVectorCovariance`.
+ if (!rows.filter(_.isInstanceOf[DenseVector]).isEmpty()) {
Review comment:
Ah oops, for some reason thinking this was a Seq.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
