PatrickRen commented on code in PR #19456:
URL: https://github.com/apache/flink/pull/19456#discussion_r894248255
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flink-connectors/flink-connector-kafka/src/main/java/org/apache/flink/connector/kafka/source/reader/KafkaPartitionSplitReader.java:
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@@ -98,9 +98,16 @@ public RecordsWithSplitIds<ConsumerRecord<byte[], byte[]>>
fetch() throws IOExce
ConsumerRecords<byte[], byte[]> consumerRecords;
try {
consumerRecords = consumer.poll(Duration.ofMillis(POLL_TIMEOUT));
- } catch (WakeupException we) {
- return new KafkaPartitionSplitRecords(
- ConsumerRecords.empty(), kafkaSourceReaderMetrics);
+ } catch (WakeupException | IllegalStateException e) {
+ // IllegalStateException will be thrown if the consumer is not
assigned any partitions.
+ // This happens if all assigned partitions are invalid or empty
(starting offset >=
Review Comment:
I think it should be "all", which refers to all partitions assigned to
**this** consumer. This exception won't be thrown if just some partitions are
invalid.
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