Github user akopich commented on the issue:
https://github.com/apache/spark/pull/19565
I'm saying they are not the same, but for larger datasets this should not
matter.
There is a change in logic. The hack with
`val batchSize = (miniBatchFraction * corpusSize).ceil.toInt`
is not used anymore. The function `updateLambda` uses the real number of
non-empty docs.
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