cadonna commented on a change in pull request #9508:
URL: https://github.com/apache/kafka/pull/9508#discussion_r532440942
##########
File path:
streams/src/test/java/org/apache/kafka/streams/state/internals/CachingInMemoryKeyValueStoreTest.java
##########
@@ -359,6 +361,31 @@ public void shouldReverseIterateOverRange() {
), results);
}
+ @Test
+ public void shouldGetRecordsWithPrefixKey() {
+ final List<KeyValue<Bytes, byte[]>> entries = new ArrayList<>();
+ entries.add(new KeyValue<>(bytesKey("k1"), bytesValue("1")));
+ entries.add(new KeyValue<>(bytesKey("k2"), bytesValue("2")));
+ entries.add(new KeyValue<>(bytesKey("p2"), bytesValue("2")));
+ entries.add(new KeyValue<>(bytesKey("p1"), bytesValue("2")));
+ entries.add(new KeyValue<>(bytesKey("p0"), bytesValue("2")));
+ store.putAll(entries);
+ final KeyValueIterator<Bytes, byte[]> keysWithPrefix =
store.prefixScan("p", new StringSerializer());
+ final List<String> keys = new ArrayList<>();
+ final List<String> values = new ArrayList<>();
+ int numberOfKeysReturned = 0;
+
+ while (keysWithPrefix.hasNext()) {
+ final KeyValue<Bytes, byte[]> next = keysWithPrefix.next();
+ keys.add(next.key.toString());
+ values.add(new String(next.value));
+ numberOfKeysReturned++;
+ }
+ assertThat(numberOfKeysReturned, is(3));
+ assertThat(keys, is(Arrays.asList("p0", "p1", "p2")));
+ assertThat(values, is(Arrays.asList("2", "2", "2")));
+ }
Review comment:
Creating a ticket and take care that the ticket gets resolved, sound
good to me. As I wote, my request is not a requirement for approval.
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