KKcorps commented on code in PR #15563:
URL: https://github.com/apache/pinot/pull/15563#discussion_r2054663147
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pinot-plugins/pinot-stream-ingestion/pinot-kinesis/src/main/java/org/apache/pinot/plugin/stream/kinesis/KinesisConsumer.java:
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@@ -93,11 +93,31 @@ private KinesisMessageBatch
getKinesisMessageBatch(KinesisPartitionGroupOffset s
return new KinesisMessageBatch(List.of(), startOffset, true);
}
- // Read records
- rateLimitRequests();
- GetRecordsRequest getRecordRequest =
-
GetRecordsRequest.builder().shardIterator(shardIterator).limit(_config.getNumMaxRecordsToFetch()).build();
- GetRecordsResponse getRecordsResponse =
_kinesisClient.getRecords(getRecordRequest);
+ // Read records from kinesis.
+ // Based on getRecords documentation, we might get a response with empty
records but a non-null nextShardIterator.
+ // This method is also used to accurately determine if we reached end of
shard. So, we need to use nextShardIterator
+ // and call getRecords again until we get non-empty records or null
nextShardIterator.
+ // To prevent an infinite loop due to some bug, we will limit the number
of attempts
+ GetRecordsResponse getRecordsResponse;
+ int attempts = 0;
+ while (true) {
Review Comment:
Let's remove this. We had this while loop code a while back but chose to
remove it in #12806
we want the consumer thread to handle empty record response
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