feat: Add ReassignmentHandler which is notified on client reassignment #242
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This enables clients to respond to a reassignment by cancelling outstanding actions and nacking all messages.
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Sep 16, 2021
| class ReassignmentHandler(ABC): | ||
| """ | ||
| A ReassignmentHandler is called any time a new partition assignment is received from the server. | ||
| It will be called with both the previous and new assignments as decided by the backend. |
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Ditto comments from the Java PR.
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Copied over the docstring changes- python unfortunately cannot implement the stronger semantics around message delivery, but I've documented this.
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This enables clients to respond to a reassignment by cancelling outstanding actions and nacking all messages.