Github user KyleLi1985 commented on the issue:
https://github.com/apache/spark/pull/23126
Sure, the test cases include sparse and dense case.
Do these case again for new commit
we use data from
http://archive.ics.uci.edu/ml/datasets/EEG+Steady-State+Visual+Evoked+Potential+Signals
as **dense case**
we use data from
http://archive.ics.uci.edu/ml/datasets/Condition+monitoring+of+hydraulic+systems
as **sparse case**
Upload the test result
Dense data case
[sparkdensedataout.txt](https://github.com/apache/spark/files/2615937/sparkdensedataout.txt)
[numpydensedataout.txt](https://github.com/apache/spark/files/2615938/numpydensedataout.txt)
Sparse data case
[sparksparsedataout.txt](https://github.com/apache/spark/files/2615943/sparksparsedataout.txt)
[numpysparsedataout.txt](https://github.com/apache/spark/files/2615944/numpysparsedataout.txt)
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