Github user mengxr commented on the pull request:
https://github.com/apache/spark/pull/4963#issuecomment-120166826
@epahomov We switched to L-BFGS with line search for the linear regression
implementation under `spark.ml`. So the step size is no longer needed.
spark-perf (https://github.com/databricks/spark-perf) is the right place for
performance benchmark code. We shouldn't run those with unit tests. So I'm
going to close this PR for now.
Thanks for contributing to MLlib! If you are interested in some other
features, here is the roadmap for 1.5:
https://issues.apache.org/jira/browse/SPARK-8445.
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