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Coordinator: check if assignors are already instances #3058

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Merged
dpkp merged 1 commit into from
Jun 11, 2026
+5 −2
Merged

Coordinator: check if assignors are already instances #3058

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7 changes: 5 additions & 2 deletions kafka/coordinator/consumer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@
import time

from kafka.coordinator.base import BaseCoordinator, Generation
from kafka.coordinator.assignors.abstract import RebalanceProtocol
from kafka.coordinator.assignors.abstract import RebalanceProtocol, AbstractPartitionAssignor
from kafka.coordinator.assignors.range import RangePartitionAssignor
from kafka.coordinator.assignors.roundrobin import RoundRobinPartitionAssignor
from kafka.coordinator.assignors.sticky.sticky_assignor import StickyPartitionAssignor
Expand Down Expand Up @@ -115,7 +115,10 @@ def __init__(self, client, subscription, **configs):

self._assignors = {}
for klass in self.config['assignors']:
assignor = klass()
if isinstance(klass, AbstractPartitionAssignor):
assignor = klass
else:
assignor = klass()
self._assignors[assignor.name] = assignor
# KIP-429: all configured assignors must agree on a single
# RebalanceProtocol mode. Mixing EAGER and COOPERATIVE
Expand Down
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