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[Junie]: fix: enable retries for Kafka receiver connection failures #209

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[Junie]: fix: enable retries for Kafka receiver connection failures #209

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13 changes: 13 additions & 0 deletions src/main/kotlin/io/github/nomisRev/kafka/receiver/internals/EventLoop.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -175,6 +175,19 @@ internal class EventLoop<K, V>(
} catch (e: WakeupException) {
logger.debug("Consumer woken")
ConsumerRecords.empty()
} catch (e: org.apache.kafka.common.errors.RetriableException) {
// In Kafka 3.7.0, certain group coordination failures (e.g. CoordinatorNotAvailableException)
// can surface from poll as RetriableException on the first attempts. We should not terminate
// the loop on such exceptions; instead, schedule another poll to allow the consumer to retry
// coordinator discovery/metadata refresh just like previous versions did.
logger.debug("Retriable exception during poll; will retry", e)
schedulePoll()
return
} catch (e: org.apache.kafka.common.errors.CoordinatorNotAvailableException) {
// Some environments might throw this concrete exception instead of RetriableException
logger.debug("Coordinator not available during poll; will retry", e)
schedulePoll()
return
}

if (records.isEmpty) {
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