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test(consumer): per-method broker for RebalanceAtScaleIntegrationTest — fix CI flake #224

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Merged
eschizoid merged 1 commit into from
Jul 3, 2026
+6 −1
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test(consumer): per-method broker for RebalanceAtScaleIntegrationTest — fix CI flake #224

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7 changes: 6 additions & 1 deletion ...mer/src/test/java/io/github/eschizoid/kpipe/consumer/RebalanceAtScaleIntegrationTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -71,8 +71,13 @@ class RebalanceAtScaleIntegrationTest {
private static final int PARTITIONS = 6;
private static final int RECORD_COUNT = 600;

// Per-method broker (instance field, NOT static). Each of this class's three methods creates its
// own 6-partition topic plus consumer groups and never tears them down; sharing one static broker
// across all three let that state accumulate until a later method's producer could not get acks
// within delivery.timeout.ms and failed at the produce step during setup. A fresh broker per
// method keeps each test isolated. Do not make this static.
@Container
static KafkaContainer kafka = new KafkaContainer(
final KafkaContainer kafka = new KafkaContainer(
DockerImageName.parse("soldevelo/kafka:%s".formatted(KAFKA_VERSION)).asCompatibleSubstituteFor("apache/kafka")
);

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