lukecwik commented on code in PR #22953:
URL: https://github.com/apache/beam/pull/22953#discussion_r1036500319
##########
sdks/java/core/src/test/java/org/apache/beam/sdk/transforms/GroupIntoBatchesTest.java:
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@@ -709,4 +645,136 @@ public void processElement(ProcessContext c,
BoundedWindow window) {
pipeline.run().waitUntilFinish();
}
+
+ @Test
+ @Category({
+ ValidatesRunner.class,
+ NeedsRunner.class,
+ UsesTimersInParDo.class,
+ UsesTestStream.class,
+ UsesStatefulParDo.class,
+ UsesOnWindowExpiration.class
+ })
+ public void
testMultipleLimitsAtOnceInGlobalWindowBatchSizeCountAndBatchSizeByteSize() {
+ // with using only one of the limits the result would be only 2 batches,
+ // if we have 3 both limit works
+ List<KV<String, String>> dataToUse =
+ Lists.newArrayList(
+ "a-1",
+ "a-2",
+ "a-3" + Strings.repeat("-", 100),
+ // byte size limit reached (BATCH_SIZE_BYTES = 25)
+ "b-4",
+ "b-5",
+ "b-6",
+ "b-7",
+ "b-8",
+ // count limit reached (BATCH_SIZE = 5)
+ "c-9")
+ .stream()
+ .map(s -> KV.of("key", s))
+ .collect(Collectors.toList());
+
+ // to ensure ordered firing
+ TestStream.Builder<KV<String, String>> streamBuilder =
+ TestStream.create(KvCoder.of(StringUtf8Coder.of(),
StringUtf8Coder.of()))
+ .advanceWatermarkTo(Instant.EPOCH);
+
+ long offset = 0L;
+ for (KV<String, String> kv : dataToUse) {
Review Comment:
No, elements can be processed in parallel in any arbitrary order. timestamps
are used with windowing which can hold/buffer inputs and produce outputs but
that isn't the case with test stream.
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