arunmahadevan commented on issue #24613: [SPARK-27549][SS] Add support for committing kafka offsets per batch for supporting external tooling URL: https://github.com/apache/spark/pull/24613#issuecomment-492793112 I was thinking a case where the driver crashes in the middle of `kafkaConsumer.commitAsync` (so only a subset of the partition offsets are committed) and then the batch is replayed. Does kafka allow committing the same offsets again? In this case there will also be an inconsistent view (subset of partition offsets are updated) when the external tooling tries to display the offset before the batch is replayed. (ideally all the offsets should advance or none of them advance)
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