guozhangwang commented on a change in pull request #8496:
URL: https://github.com/apache/kafka/pull/8496#discussion_r418201398
##########
File path: streams/src/main/java/org/apache/kafka/streams/StreamsConfig.java
##########
@@ -838,6 +838,7 @@
static {
final Map<String, Object> tempProducerDefaultOverrides = new
HashMap<>();
tempProducerDefaultOverrides.put(ProducerConfig.LINGER_MS_CONFIG,
"100");
+
tempProducerDefaultOverrides.put(ProducerConfig.TRANSACTION_TIMEOUT_CONFIG,
10000);
Review comment:
nit: Could you add the original comment explaining why we set it to
smaller value too?
##########
File path:
streams/src/test/java/org/apache/kafka/streams/integration/EosBetaUpgradeIntegrationTest.java
##########
@@ -1064,14 +1071,16 @@ private void addAllKeys(final Set<Long> allKeys, final
List<KeyValue<Long, Long>
// must be public to allow KafkaProducer to instantiate it
public static class KeyPartitioner implements Partitioner {
+ private final static LongDeserializer LONG_DESERIALIZER = new
LongDeserializer();
+
@Override
public int partition(final String topic,
final Object key,
final byte[] keyBytes,
final Object value,
final byte[] valueBytes,
final Cluster cluster) {
- return ((Long) key).intValue() % NUM_TOPIC_PARTITIONS;
+ return LONG_DESERIALIZER.deserialize(topic, keyBytes).intValue() %
NUM_TOPIC_PARTITIONS;
Review comment:
Hmm, this sounds to me that the StreamProducer's own `partitionsFor` did
not return the num.partitions so we ended up calling `send` with `partition ==
null`, since otherwise we will get the `partition` as
```
partition = partitioner.partition(topic, key, value, partitions.size());
```
where `partitioner` is the `StreamsPartitioner` and the producer's own
partitioner should not be used.
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