Details
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Bug
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Status: Closed
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Blocker
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Resolution: Fixed
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0.8.0
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None
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None
Description
If the current controller experiences an intermittent soft failure (GC pause) in the middle of leader election or partition reassignment, a new controller might get elected and start communicating new state change decisions to the brokers. After recovering from the soft failure, the old controller might continue sending some stale state change decisions to the brokers, resulting in unexpected failures. We need to introduce a controller generation id that increments with controller election. The brokers should reject any state change requests by a controller with an older generation id.
