vamossagar12 commented on code in PR #13453:
URL: https://github.com/apache/kafka/pull/13453#discussion_r1151411130
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connect/runtime/src/test/java/org/apache/kafka/connect/storage/KafkaStatusBackingStoreTest.java:
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@@ -308,6 +308,37 @@ public void readTaskState() {
assertEquals(status, store.get(TASK));
}
+ @Test
+ public void readTaskStateShouldIgnoreStaleStatuses() {
+ byte[] value = new byte[0];
+ String otherWorkerId = "anotherhost:8083";
+
+ // This worker sends a RUNNING status in the most recent generation
+ Map<String, Object> firstStatusRead = new HashMap<>();
+ firstStatusRead.put("worker_id", otherWorkerId);
+ firstStatusRead.put("state", "RUNNING");
+ firstStatusRead.put("generation", 10L);
+
+ // Another worker still ends up producing an UNASSIGNED status before
it could
+ // read the newer RUNNING status from above belonging to an older
generation.
+ Map<String, Object> secondStatusRead = new HashMap<>();
+ secondStatusRead.put("worker_id", WORKER_ID);
+ secondStatusRead.put("state", "UNASSIGNED");
+ secondStatusRead.put("generation", 9L);
+
+ when(converter.toConnectData(STATUS_TOPIC, value))
+ .thenReturn(new SchemaAndValue(null, firstStatusRead))
+ .thenReturn(new SchemaAndValue(null, secondStatusRead));
+
+ store.read(consumerRecord(0, "status-task-conn-0", value));
+ store.read(consumerRecord(0, "status-task-conn-0", value));
+
+ verify(kafkaBasedLog, never()).send(anyString(), any(),
any(Callback.class));
Review Comment:
Oh I see. This came by due to a direct copy-paste :) Will remove it. Thanks
for pointing it out!
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