reswqa commented on code in PR #25452:
URL: https://github.com/apache/flink/pull/25452#discussion_r1794735269
##########
flink-tests/src/test/java/org/apache/flink/test/streaming/runtime/KeyedPartitionWindowedStreamITCase.java:
##########
@@ -97,6 +101,42 @@ public void mapPartition(
createExpectedString(3));
}
+ @Test
+ void testRichMapPartitionFunctionHasOpen() throws Exception {
+ StreamExecutionEnvironment env =
StreamExecutionEnvironment.getExecutionEnvironment();
+ DataStreamSource<Tuple2<String, String>> source =
env.fromData(createSource());
+ source.keyBy(
+ new KeySelector<Tuple2<String, String>, String>() {
+ @Override
+ public String getKey(Tuple2<String, String> value)
throws Exception {
+ return value.f0;
+ }
+ })
+ .fullWindowPartition()
+ .mapPartition(
+ new RichMapPartitionFunction<Tuple2<String, String>,
String>() {
+
+ private boolean isOpen = false;
+
+ @Override
+ public void open(OpenContext openContext) throws
Exception {
+ super.open(openContext);
+ isOpen = true;
+ }
+
+ @Override
+ public void mapPartition(
+ Iterable<Tuple2<String, String>> values,
Collector<String> out)
+ throws Exception {
+ Assertions.assertTrue(
Review Comment:
We shall use `AssertJ` instead of `JunitAssertion`
`assertThat(isOpen).isTrue()`
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