DL1231 commented on code in PR #20837:
URL: https://github.com/apache/kafka/pull/20837#discussion_r2540500858
##########
core/src/main/java/kafka/server/share/SharePartition.java:
##########
@@ -1885,7 +1908,21 @@ private int acquireSubsetBatchRecords(
continue;
}
- InFlightState updateResult =
offsetState.getValue().tryUpdateState(RecordState.ACQUIRED,
DeliveryCountOps.INCREASE,
+ int recordDeliveryCount =
offsetState.getValue().deliveryCount();
+ // On last delivery attempt, submit acquired records,
+ // bad record will be delivered alone next time
+ if (maxDeliveryCount > 2 && recordDeliveryCount ==
maxDeliveryCount - 1 && acquiredCount > 0) {
+ hasBadRecord = true;
+ break;
+ }
+
+ // On repeated delivery failures (>=
badRecordDeliveryThreshold), progressively reduce batch size to isolate bad
record
+ if (recordDeliveryCount >= badRecordDeliveryThreshold &&
maxFetchRecordsWhileBadRecord < 0) {
+ maxFetchRecordsWhileBadRecord = Math.max(1, (long)
inFlightBatch.offsetState().size() >> (recordDeliveryCount -
badRecordDeliveryThreshold + 1));
+ hasBadRecord = true;
+ }
Review Comment:
Done.
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