cadonna commented on a change in pull request #9508:
URL: https://github.com/apache/kafka/pull/9508#discussion_r532438482
##########
File path:
streams/src/main/java/org/apache/kafka/streams/state/internals/MeteredKeyValueStore.java
##########
@@ -229,6 +230,15 @@ public V delete(final K key) {
}
}
+ @Override
+ public <PS extends Serializer<P>, P> KeyValueIterator<K, V>
prefixScan(final P prefix, final PS prefixKeySerializer) {
+
+ return new MeteredKeyValueIterator(
+ wrapped().prefixScan(prefix, prefixKeySerializer),
+ rangeSensor
Review comment:
I think, to be consistent we should add a new sensor for the prefix
scan. We have a sensor for each operation on a key-value store. The only
exception is `reverseRange()`, which is a variant of range and does not
necessarily qualify for its own sensor.
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