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Return empty set from consumer.partitions_for_topic when topic not found #2556

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Merged
merged 1 commit into from
Mar 18, 2025
Merged

Return empty set from consumer.partitions_for_topic when topic not found #2556

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1 change: 1 addition & 0 deletions kafka/cluster.py
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Original file line number Diff line number Diff line change
Expand Up @@ -112,6 +112,7 @@ def partitions_for_topic(self, topic):

Returns:
set: {partition (int), ...}
None if topic not found.
"""
if topic not in self._partitions:
return None
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2 changes: 1 addition & 1 deletion kafka/consumer/group.py
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Expand Up @@ -634,7 +634,7 @@ def partitions_for_topic(self, topic):
if partitions is None:
self._fetch_all_topic_metadata()
partitions = cluster.partitions_for_topic(topic)
return partitions
return partitions or set()

def poll(self, timeout_ms=0, max_records=None, update_offsets=True):
"""Fetch data from assigned topics / partitions.
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4 changes: 2 additions & 2 deletions kafka/coordinator/consumer.py
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Expand Up @@ -203,8 +203,8 @@ def _auto_assign_all_partitions(self):
def _build_metadata_snapshot(self, subscription, cluster):
metadata_snapshot = {}
for topic in subscription.group_subscription():
partitions = cluster.partitions_for_topic(topic) or []
metadata_snapshot[topic] = set(partitions)
partitions = cluster.partitions_for_topic(topic)
metadata_snapshot[topic] = partitions or set()
return metadata_snapshot

def _lookup_assignor(self, name):
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