jeffkbkim commented on code in PR #14849:
URL: https://github.com/apache/kafka/pull/14849#discussion_r1412701656
##########
group-coordinator/src/test/java/org/apache/kafka/coordinator/group/runtime/CoordinatorRuntimeTest.java:
##########
@@ -1659,4 +1680,117 @@ public void testPartitionLoadSensor() {
verify(runtimeMetrics,
times(1)).recordPartitionLoadSensor(startTimeMs, startTimeMs + 1000);
}
+
+ @Test
+ public void testPartitionLoadGeneratesSnapshotAtHighWatermark() {
+ MockTimer timer = new MockTimer();
+ MockPartitionWriter writer = mock(MockPartitionWriter.class);
+ MockCoordinatorShardBuilderSupplier supplier =
mock(MockCoordinatorShardBuilderSupplier.class);
+ MockCoordinatorShardBuilder builder =
mock(MockCoordinatorShardBuilder.class);
+ MockCoordinatorShard coordinator = mock(MockCoordinatorShard.class);
+ GroupCoordinatorRuntimeMetrics runtimeMetrics =
mock(GroupCoordinatorRuntimeMetrics.class);
+
+ CoordinatorRuntime<MockCoordinatorShard, String> runtime =
+ new CoordinatorRuntime.Builder<MockCoordinatorShard, String>()
+ .withTime(Time.SYSTEM)
+ .withTimer(timer)
+ .withLoader(new MockCoordinatorLoader(
+ new CoordinatorLoader.LoadSummary(
+ 1000,
+ 2000,
+ 30,
+ 3000),
+ Arrays.asList(5L, 15L, 27L),
+ Arrays.asList(5L, 15L)))
+ .withEventProcessor(new DirectEventProcessor())
+ .withPartitionWriter(writer)
+ .withCoordinatorShardBuilderSupplier(supplier)
+ .withCoordinatorRuntimeMetrics(runtimeMetrics)
+ .withCoordinatorMetrics(mock(GroupCoordinatorMetrics.class))
+ .build();
+
+ when(builder.withSnapshotRegistry(any())).thenReturn(builder);
+ when(builder.withLogContext(any())).thenReturn(builder);
+ when(builder.withTime(any())).thenReturn(builder);
+ when(builder.withTimer(any())).thenReturn(builder);
+ when(builder.withCoordinatorMetrics(any())).thenReturn(builder);
+ when(builder.withTopicPartition(any())).thenReturn(builder);
+ when(builder.build()).thenReturn(coordinator);
+ when(supplier.get()).thenReturn(builder);
+
+ // Getting the coordinator context fails because the coordinator
+ // does not exist until scheduleLoadOperation is called.
+ assertThrows(NotCoordinatorException.class, () ->
runtime.contextOrThrow(TP));
+
+ // Schedule the loading.
+ runtime.scheduleLoadOperation(TP, 0);
+
+ // Getting the coordinator context succeeds now.
+ CoordinatorRuntime<MockCoordinatorShard, String>.CoordinatorContext
ctx = runtime.contextOrThrow(TP);
+
+ // When the loading completes, the coordinator transitions to active.
+ assertEquals(ACTIVE, ctx.state);
+
+ assertEquals(27L, ctx.stateMachine.lastWrittenOffset());
+ assertEquals(15L, ctx.stateMachine.lastCommittedOffset());
+ assertFalse(ctx.stateMachine.snapshotRegistry().hasSnapshot(0L));
Review Comment:
i'm not sure what you mean. this is to confirm that previous snapshots were
deleted
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