Abacn commented on code in PR #34258:
URL: https://github.com/apache/beam/pull/34258#discussion_r2042335539
##########
sdks/java/io/kafka/src/main/java/org/apache/beam/sdk/io/kafka/KafkaUnboundedSource.java:
##########
@@ -100,8 +104,34 @@ public List<KafkaUnboundedSource<K, V>> split(int
desiredNumSplits, PipelineOpti
}
}
} else {
+ final Map<String, List<Integer>> topicsAndPartitions = new HashMap<>();
for (TopicPartition p : partitions) {
- Lineage.getSources().add("kafka", ImmutableList.of(bootStrapServers,
p.topic()));
+ topicsAndPartitions.computeIfAbsent(p.topic(), k -> new
ArrayList<>()).add(p.partition());
+ }
+ try (Consumer<?, ?> consumer =
spec.getConsumerFactoryFn().apply(spec.getConsumerConfig())) {
+ for (Map.Entry<String, List<Integer>> e :
topicsAndPartitions.entrySet()) {
+ final String providedTopic = e.getKey();
+ final List<Integer> providedPartitions = e.getValue();
+ final Set<Integer> partitionsForTopic;
+ try {
+ partitionsForTopic =
+ consumer.partitionsFor(providedTopic).stream()
+ .map(PartitionInfo::partition)
+ .collect(Collectors.toSet());
+ for (Integer p : providedPartitions) {
+ checkState(
+ partitionsForTopic.contains(p),
+ "Partition "
+ + p
+ + " does not exist for topic "
+ + providedTopic
+ + ". Please check Kafka configuration.");
+ }
+ } catch (KafkaException exception) {
Review Comment:
This catch statement does not work as expected, because KafkaException
throws outside the for. see
https://github.com/apache/beam/pull/34258#issuecomment-2799855776
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