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changes.mady.by.user Jason Gustafson

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changes.mady.by.user Matthias Sax

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This KIP adds the leader epoch to the Fetch request. When a broker receives a fetch request, it will compare the requested epoch with its own. The fetch will only be permitted if the requested epoch matches the leader's epoch. If the requested epoch is older than the leader's, we will use a new FENCED_LEADER_EPOCH error code. If the epoch is newer than the leader's (for example in a KIP-232 scenario), we will use a new UNKNOWN_LEADER_EPOCH error code.

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