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Do not return control batch records #135

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Do not return control batch records #135

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56b97b0
Do not return control batch records
bradenneal1 Apr 5, 2023
b8f7657
Merge branch 'master' into feature/skip_control_batch
bradenneal1 May 16, 2024
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7 changes: 7 additions & 0 deletions kafka/consumer/fetcher.py
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Original file line number Diff line number Diff line change
Expand Up @@ -460,6 +460,13 @@ def _unpack_message_set(self, tp, records):
except AttributeError:
pass

# Control messages are used to enable transactions in Kafka and are generated by the
# broker. Clients should not return control batches (ie. those with this bit set) to
# applications. (since 0.11.0.0)
if getattr(batch, "is_control_batch", False):
batch = records.next_batch()
continue

for record in batch:
key_size = len(record.key) if record.key is not None else -1
value_size = len(record.value) if record.value is not None else -1
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