mjsax commented on code in PR #14426:
URL: https://github.com/apache/kafka/pull/14426#discussion_r1483677544
##########
streams/src/test/java/org/apache/kafka/streams/kstream/internals/KStreamKStreamLeftJoinTest.java:
##########
@@ -436,6 +436,239 @@ public void
testRightNonJoinedRecordsAreNeverEmittedByTheRightProcessor() {
}
}
+ @Test
+ public void testLeftNonJoinedRecordsWithZeroAfterAreEmitted() {
+ final StreamsBuilder builder = new StreamsBuilder();
+
+ final int[] expectedKeys = new int[] {0, 1, 2, 3};
+
+ final KStream<Integer, String> stream1;
+ final KStream<Integer, String> stream2;
+ final KStream<Integer, String> joined;
+ final MockApiProcessorSupplier<Integer, String, Void, Void> supplier =
new MockApiProcessorSupplier<>();
+ stream1 = builder.stream(topic1, consumed);
+ stream2 = builder.stream(topic2, consumed);
+
+ joined = stream1.leftJoin(
+ stream2,
+ MockValueJoiner.TOSTRING_JOINER,
+ JoinWindows.ofTimeDifferenceWithNoGrace(ofMillis(100)).after(ZERO),
+ StreamJoined.with(Serdes.Integer(),
+ Serdes.String(),
+ Serdes.String())
+ );
+ joined.process(supplier);
+
+ final Collection<Set<String>> copartitionGroups =
+
TopologyWrapper.getInternalTopologyBuilder(builder.build()).copartitionGroups();
+
+ assertEquals(1, copartitionGroups.size());
+ assertEquals(new HashSet<>(Arrays.asList(topic1, topic2)),
copartitionGroups.iterator().next());
+
+ try (final TopologyTestDriver driver = new
TopologyTestDriver(builder.build(), PROPS)) {
+ final TestInputTopic<Integer, String> inputTopic1 =
+ driver.createInputTopic(topic1, new IntegerSerializer(),
new StringSerializer(), Instant.ofEpochMilli(0L), Duration.ZERO);
+ final TestInputTopic<Integer, String> inputTopic2 =
+ driver.createInputTopic(topic2, new IntegerSerializer(),
new StringSerializer(), Instant.ofEpochMilli(0L), Duration.ZERO);
+ final MockApiProcessor<Integer, String, Void, Void> processor =
supplier.theCapturedProcessor();
+
+ processor.init(null);
+ // push four items with increasing timestamps to the primary
stream; this should emit null-joined items
+ // w1 = {}
+ // w2 = {}
+ // --> w1 = { 0:B0 (ts: 1000), 1:B1 (ts: 1001), 2:B2 (ts: 1002),
3:B3 (ts: 1003) }
+ // w2 = {}
+ final long time = 1000L;
+ for (int i = 0; i < expectedKeys.length; i++) {
+ inputTopic1.pipeInput(expectedKeys[i], "B" + expectedKeys[i],
time + i);
+ }
+ processor.checkAndClearProcessResult(
+ new KeyValueTimestamp<>(0, "B0+null", 1000L),
+ new KeyValueTimestamp<>(1, "B1+null", 1001L),
+ new KeyValueTimestamp<>(2, "B2+null", 1002L)
+ );
+ }
+ }
+
+ @Test
+ public void testLeftJoinedRecordsWithZeroAfterAreEmitted() {
+ final StreamsBuilder builder = new StreamsBuilder();
+
+ final int[] expectedKeys = new int[] {0, 1, 2, 3};
+ final int[] expectedKeysNotJoined = new int[] {10, 11, 12, 13};
+
+ final KStream<Integer, String> stream1;
+ final KStream<Integer, String> stream2;
+ final KStream<Integer, String> joined;
+ final MockApiProcessorSupplier<Integer, String, Void, Void> supplier =
new MockApiProcessorSupplier<>();
+ stream1 = builder.stream(topic1, consumed);
+ stream2 = builder.stream(topic2, consumed);
+
+ joined = stream1.leftJoin(
+ stream2,
+ MockValueJoiner.TOSTRING_JOINER,
+
JoinWindows.ofTimeDifferenceWithNoGrace(ofMillis(100)).after(Duration.ZERO),
+ StreamJoined.with(Serdes.Integer(),
+ Serdes.String(),
+ Serdes.String())
+ );
+ joined.process(supplier);
+
+ final Collection<Set<String>> copartitionGroups =
+
TopologyWrapper.getInternalTopologyBuilder(builder.build()).copartitionGroups();
+
+ assertEquals(1, copartitionGroups.size());
+ assertEquals(new HashSet<>(Arrays.asList(topic1, topic2)),
copartitionGroups.iterator().next());
+
+ try (final TopologyTestDriver driver = new
TopologyTestDriver(builder.build(), PROPS)) {
+ final TestInputTopic<Integer, String> inputTopic1 =
+ driver.createInputTopic(topic1, new IntegerSerializer(),
new StringSerializer(), Instant.ofEpochMilli(0L), Duration.ZERO);
+ final TestInputTopic<Integer, String> inputTopic2 =
+ driver.createInputTopic(topic2, new IntegerSerializer(),
new StringSerializer(), Instant.ofEpochMilli(0L), Duration.ZERO);
+ final MockApiProcessor<Integer, String, Void, Void> processor =
supplier.theCapturedProcessor();
+
+ processor.init(null);
+
+ // push four items with increasing timestamps to the primary
stream; the other window is empty;
+ // this should emit the first three left-joined items;
+ // A3 is not triggered yet
+ // w1 = {}
+ // w2 = {}
+ // --> w1 = { 0:A0 (ts: 1000), 1:A1 (ts: 1001), 2:A2 (ts: 1002),
3:A3 (ts: 1003) }
+ // w2 = {}
+ long time = 1000L;
+ for (int i = 0; i < expectedKeys.length; i++) {
+ inputTopic1.pipeInput(expectedKeys[i], "A" + expectedKeys[i],
time + i);
+ }
+ processor.checkAndClearProcessResult(
+ new KeyValueTimestamp<>(0, "A0+null", 1000L),
+ new KeyValueTimestamp<>(1, "A1+null", 1001L),
+ new KeyValueTimestamp<>(2, "A2+null", 1002L)
+ );
+
+ // push four items smaller timestamps (out of window) to the
secondary stream;
+ // this should produce four joined items
Review Comment:
We filed https://issues.apache.org/jira/browse/KAFKA-16123 in the mean time.
It might be best to merge this PR as-is, and tackle the grace-period issue
(which is more generic an independent of this fix) in a follow up PR.
--
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: jira-unsubscr...@kafka.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
