Make topic exists error silent in Kafka 3.0 createTopic#17767
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xiangfu0 merged 1 commit intoapache:masterfrom Feb 26, 2026
Merged
Make topic exists error silent in Kafka 3.0 createTopic#17767xiangfu0 merged 1 commit intoapache:masterfrom
xiangfu0 merged 1 commit intoapache:masterfrom
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Handle TopicExistsException in KafkaServerStartable.createTopic by returning silently when the topic already exists, matching the behavior of kafka20 clients. This prevents quickstart from failing when topics like flights-realtime already exist. Co-authored-by: Cursor <cursoragent@cursor.com>
Codecov Report❌ Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## master #17767 +/- ##
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+ Coverage 63.21% 63.23% +0.02%
Complexity 1454 1454
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Files 3179 3179
Lines 191279 191282 +3
Branches 29251 29253 +2
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+ Hits 120909 120952 +43
+ Misses 60930 60894 -36
+ Partials 9440 9436 -4
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shauryachats
approved these changes
Feb 25, 2026
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Summary
Handle
TopicExistsExceptioninKafkaServerStartable.createTopicby returning silently when the topic already exists, matching the behavior of kafka20 clients.Problem
Quickstart fails with
RuntimeException: Failed to create topic: flights-realtimewhen the topic already exists (e.g., from a previous run).Solution
Catch
ExecutionExceptionwith causeTopicExistsExceptionand return silently instead of rethrowing, consistent with kafka20 behavior.Testing
KafkaServerStartableTestpassesMade with Cursor