Github user MechCoder commented on a diff in the pull request:
https://github.com/apache/spark/pull/6684#discussion_r31869050
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/regression/GeneralizedLinearAlgorithm.scala
---
@@ -179,7 +179,7 @@ abstract class GeneralizedLinearAlgorithm[M <:
GeneralizedLinearModel]
*/
def run(input: RDD[LabeledPoint]): M = {
if (numFeatures < 0) {
- numFeatures = input.map(_.features.size).first()
+ numFeatures = input.first().features.size
--- End diff --
There is also a good possibility that input is very large. Is accessing the
first element of a RDD slower than doing a distributed operation across the
entire RDD?
---
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 [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
