mxm commented on code in PR #21443:
URL: https://github.com/apache/flink/pull/21443#discussion_r1049868134
##########
flink-streaming-java/src/test/java/org/apache/flink/streaming/runtime/tasks/StreamTaskTest.java:
##########
@@ -1799,6 +1811,64 @@ public void testMailboxMetricsMeasurement() throws
Exception {
}
}
+ @Test
+ public void
testForwardPartitionerIsConvertedToRebalanceOnParallelismChanges()
+ throws Exception {
+ StreamTaskMailboxTestHarnessBuilder<Integer> builder =
+ new StreamTaskMailboxTestHarnessBuilder<>(
+ OneInputStreamTask::new,
BasicTypeInfo.INT_TYPE_INFO)
+ .addInput(BasicTypeInfo.INT_TYPE_INFO)
+ .setOutputPartitioner(new ForwardPartitioner<>())
+ .setupOutputForSingletonOperatorChain(
+ new TestBoundedOneInputStreamOperator());
+
+ try (StreamTaskMailboxTestHarness<Integer> harness = builder.build()) {
+
+ RecordWriterDelegate<SerializationDelegate<StreamRecord<Object>>>
recordWriterDelegate =
+ harness.streamTask.createRecordWriterDelegate(
+ harness.streamTask.configuration,
harness.streamMockEnvironment);
+ // Prerequisite: We are using the ForwardPartitioner
+ assertTrue(
+ ((ChannelSelectorRecordWriter)
+ ((SingleRecordWriter)
recordWriterDelegate)
+ .getRecordWriter(0))
+ .getChannelSelector()
+ instanceof ForwardPartitioner);
+
+ // Change consumer parallelism
+ harness.streamTask.configuration.setVertexNonChainedOutputs(
+ Arrays.asList(
+ new NonChainedOutput(
+ false,
+ 0,
+ // Set a different consumer parallelism to
force trigger
+ // replacing the ForwardPartitioner
+ 42,
+ 100,
+ 1000,
+ false,
+ new IntermediateDataSetID(),
+ new OutputTag<>("output",
IntegerTypeInfo.INT_TYPE_INFO),
+ // Use forward partitioner
+ new ForwardPartitioner<>(),
+ ResultPartitionType.PIPELINED)));
+ harness.streamTask.configuration.serializeAllConfigs();
+
+ // Re-create outputs
+ recordWriterDelegate =
+ harness.streamTask.createRecordWriterDelegate(
+ harness.streamTask.configuration,
harness.streamMockEnvironment);
+ // We should now have a RescalePartitioner to distribute the load
Review Comment:
Thanks!
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
