huwh commented on code in PR #22438:
URL: https://github.com/apache/flink/pull/22438#discussion_r1177277341
##########
flink-streaming-java/src/test/java/org/apache/flink/streaming/api/graph/StreamingJobGraphGeneratorTest.java:
##########
@@ -283,6 +283,25 @@ public void testTransformationSetParallelism() {
assertThat(vertices.get(2).isParallelismConfigured()).isTrue();
}
+ @Test
+ public void testTransformationSetMaxParallelism() {
Review Comment:
All test methods in junit5 should be package-private.
```java
void testTransformationSetMaxParallelism()
```
##########
flink-streaming-java/src/test/java/org/apache/flink/streaming/api/graph/StreamingJobGraphGeneratorTest.java:
##########
@@ -283,6 +283,25 @@ public void testTransformationSetParallelism() {
assertThat(vertices.get(2).isParallelismConfigured()).isTrue();
}
+ @Test
+ public void testTransformationSetMaxParallelism() {
+ StreamExecutionEnvironment env =
StreamExecutionEnvironment.getExecutionEnvironment();
+ /* The max parallelism of the environment (that is inherited by the
source)
+ and the parallelism of the map operator needs to be different for this
test */
+ env.setMaxParallelism(4);
+ env.fromSequence(1L, 3L).map(i ->
i).setMaxParallelism(10).print().setMaxParallelism(20);
Review Comment:
It's better to introduce variables for each DataStream/DataStreamSink and
then get StreamNode by their ID.
```java
DataStreamSource<Long> source = env.fromSequence(1L, 3L);
assertThat(streamGraph.getStreamNode(source.getId()).getMaxParallelism()).isEqualTo(4);
```
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