GWphua commented on code in PR #18234:
URL: https://github.com/apache/druid/pull/18234#discussion_r2221401883
##########
extensions-core/kafka-indexing-service/src/main/java/org/apache/druid/indexing/kafka/supervisor/KafkaSupervisor.java:
##########
@@ -265,12 +266,18 @@ protected Map<KafkaTopicPartition, Long>
getPartitionRecordLag()
return null;
}
- if
(!latestSequenceFromStream.keySet().equals(highestCurrentOffsets.keySet())) {
- log.warn(
- "Kafka partitions[%s] do not match task partitions[%s]",
- latestSequenceFromStream.keySet(),
- highestCurrentOffsets.keySet()
+ Set<KafkaTopicPartition> kafkaPartitions =
latestSequenceFromStream.keySet();
+ Set<KafkaTopicPartition> taskPartitions = highestCurrentOffsets.keySet();
+ if (!kafkaPartitions.equals(taskPartitions)) {
+ List<KafkaTopicPartition> missingTaskPartitions = new ArrayList<>(
+ Sets.difference(kafkaPartitions, taskPartitions)
);
+ List<KafkaTopicPartition> missingKafkaPartitions = new ArrayList<>(
+ Sets.difference(taskPartitions, kafkaPartitions)
+ );
+
+ log.warn("Mismatched kafka and task partitions: Missing Task Partitions
%s, Missing Kafka Partitions %s",
Review Comment:
Hi @cecemei I am thinking how to handle the `JsonProcessingException`. Since
this is an unchecked exception, it must be caught or the compiler wont be happy
about it. Do you have any suggestions on this?
I am hesitating from adding exception to the signature
`getPartitionRecordLag()` since it
1. Inherits from the `SeekableStreamSupervisor`, we will also need to change
method signature in that class.
2. We will need to handle the `JsonProcessingException` at places that call
it (and possible change method signature there too)
3. It is unlikely to throw the `JsonProcessingException` exception in the
first place, given the presence of toString() methods.
Currently, I use the DruidException.defensive(), whose JavaDocs state it
being "an exception that should never actually be triggered"
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