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Pull Request: here

Discussing thread: here

Vote thread: here

Motivation

When the server expands partitions for a topic, the producer firstly perceives the expansion, and some data is written in the newly expanded partitions. But the consumer group perceives the expansion later, after the rebalance is completed, the newly expanded partitions will be consumed from the latest if "auto.offset.reset" is set to "latest". Within a period of time, the data of the newly expanded partitions is skipped and lost by the consumer. But for a group that is consuming, it does not want to skip the data. Therefore, we hope to provide some richer offset reset mechanisms to solve this problem, and secondly, to deal with the problem of out of range more flexibly.

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