Github user seddonm1 commented on the pull request:
https://github.com/apache/spark/pull/10976#issuecomment-183506233
Thanks @mengxr.
I have updated the pull request with your suggestions. I believe that we
still need to use the .compressed even after moving the `if (value > td) {` so
that we can 'Return a vector in either dense or sparse format, whichever uses
less storage.' which will occur if all values in a dense vector are greater
than the threshold.
`Vectors.sparse(data.size, indices.result(), values.result()).compressed`
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