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Producers

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How can I rewind the offset in the consumer?

If you are using the high level consumer, currently there is no api to reset the offsets in the consumer. The only way is to stop all consumers and reset the offsets for that consumer group in ZK manually. We do have an import/export offset tool that you can use (bin/kafka-run-class.sh kafka.tools.ImportZkOffsets and bin/kafka-run-class.sh kafka.tools.ExportZkOffsets). To get the offsets for importing, we have a GetOffsetShell tool (bin/kafka-run-class.sh kafka.tools.GetOffsetShell) that allows you to get the offsets before a give timestamp. The offsets returned there are the offsets corresponding to the first message of each log segment. So the granularity is very coarse.

I don't want my consumer's offsets to be committed automatically. Can I manually manage my consumer's offsets?

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