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[GitHub] [spark] viirya opened a new pull request #31328: [SPARK-34187][SS][3.0] Use available offset range obtained during polling when checking offset validation
viirya opened a new pull request #31328:
URL: https://github.com/apache/spark/pull/31328
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### What changes were proposed in this pull request?
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This patch uses the available offset range obtained during polling Kafka records to do offset validation check.
### Why are the changes needed?
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We support non-consecutive offsets for Kafka since 2.4.0. In `fetchRecord`, we do offset validation by checking if the offset is in available offset range. But currently we obtain latest available offset range to do the check. It looks not correct as the available offset range could be changed during the batch, so the available offset range is different than the one when we polling the records from Kafka.
It is possible that an offset is valid when polling, but at the time we do the above check, it is out of latest available offset range. We will wrongly consider it as data loss case and fail the query or drop the record.
### Does this PR introduce _any_ user-facing change?
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No
### How was this patch tested?
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This should pass existing unit tests.
This is hard to have unit test as the Kafka producer and the consumer is asynchronous. Further, we also need to make the offset out of new available offset range.
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[GitHub] [spark] viirya commented on pull request #31328: [SPARK-34187][SS][3.0] Use available offset range obtained during polling when checking offset validation
Posted by GitBox <gi...@apache.org>.
viirya commented on pull request #31328:
URL: https://github.com/apache/spark/pull/31328#issuecomment-767034555
cc @dongjoon-hyun
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[GitHub] [spark] viirya commented on pull request #31328: [SPARK-34187][SS][3.0] Use available offset range obtained during polling when checking offset validation
Posted by GitBox <gi...@apache.org>.
viirya commented on pull request #31328:
URL: https://github.com/apache/spark/pull/31328#issuecomment-767034555
cc @dongjoon-hyun
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[GitHub] [spark] dongjoon-hyun closed pull request #31328: [SPARK-34187][SS][3.0] Use available offset range obtained during polling when checking offset validation
Posted by GitBox <gi...@apache.org>.
dongjoon-hyun closed pull request #31328:
URL: https://github.com/apache/spark/pull/31328
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* This patch passes all tests.
* This patch merges cleanly.
* This patch adds no public classes.
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[GitHub] [spark] dongjoon-hyun closed pull request #31328: [SPARK-34187][SS][3.0] Use available offset range obtained during polling when checking offset validation
Posted by GitBox <gi...@apache.org>.
dongjoon-hyun closed pull request #31328:
URL: https://github.com/apache/spark/pull/31328
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