Github user brkyvz commented on the issue:
https://github.com/apache/spark/pull/16114
I've taken a look at the code. This change seems safe to me. Even if we
process extra data, but fail to checkpoint to Kinesis, Spark streaming will
re-process the exact same batch on a restart providing at least once semantics
but with a stronger guarantee (that the data will be processed with exactly the
same batching).
LGTM! Thanks @maropu
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