lhotari commented on a change in pull request #12343:
URL: https://github.com/apache/pulsar/pull/12343#discussion_r754842709
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File path:
pulsar-client/src/main/java/org/apache/pulsar/client/impl/PersistentAcknowledgmentsGroupingTracker.java
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@@ -477,13 +477,16 @@ public void flush() {
private void flushAsync(ClientCnx cnx) {
boolean shouldFlush = false;
if (cumulativeAckFlushRequired) {
- newMessageAckCommandAndWrite(cnx, consumer.consumerId,
lastCumulativeAck.messageId.ledgerId,
- lastCumulativeAck.messageId.getEntryId(),
lastCumulativeAck.bitSetRecyclable,
- AckType.Cumulative, null, Collections.emptyMap(), false,
- this.currentCumulativeAckFuture, null);
-
this.consumer.unAckedChunkedMessageIdSequenceMap.remove(lastCumulativeAck.messageId);
- shouldFlush = true;
- cumulativeAckFlushRequired = false;
+ final MessageIdImpl messageIdOfLastAck =
lastCumulativeAck.messageId;
Review comment:
@gaozhangmin When reading the code, it seems that messageId should never
be null. As @michaeljmarshall pointed out, there could be another issue hiding
here.
It might be a thread safety issue which could cause other problems.
@gaozhangmin Did you check how messageId could become null?
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