Github user tygert commented on the issue:
https://github.com/apache/spark/pull/16556
Maybe @hl475 could add his remark about how "we don't use LAPACK here since
there is no pivoted QR in LAPACK that stops when the rank is exhausted" to the
inline comments he highlighted? Incidentally, RSVDPACK --
https://github.com/sergeyvoronin/LowRankMatrixDecompositionCodes -- does
include the necessary routine, but neither Spark nor Breeze is planning to
incorporate the new RSVDPACK so far as I know.
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