Github user rxin commented on the issue:
https://github.com/apache/spark/pull/14568
Is this actually going to solve the use case asked in SPARK-10868?
The problem with monotonicallyIncreasingId is that it is actually not
consecutive -- e.g. even if you have 200 records in this batch of update, the
max id won't be 200. It will be some very large number (since the upper few
bits are determined by the partition id).
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