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Add log to track negtive unacked msg. #14501

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Mar 10, 2022
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Original file line number Diff line number Diff line change
Expand Up @@ -138,6 +138,8 @@ public class Consumer {
@Setter
private volatile long consumerEpoch;

private long negtiveUnackedMsgsCount;

public Consumer(Subscription subscription, SubType subType, String topicName, long consumerId,
int priorityLevel, String consumerName,
boolean isDurable, TransportCnx cnx, String appId,
Expand Down Expand Up @@ -947,6 +949,10 @@ private int addAndGetUnAckedMsgs(Consumer consumer, int ackedMessages) {
subscription.addUnAckedMessages(ackedMessages);
unackedMsgs = UNACKED_MESSAGES_UPDATER.addAndGet(consumer, ackedMessages);
}
if (unackedMsgs < 0 && ++negtiveUnackedMsgsCount % 10000 == 0) {
log.warn("unackedMsgs is : {}, ackedMessages : {}, negtiveUnackedMsgsCount : {}, consumer : {}",
unackedMsgs, ackedMessages, negtiveUnackedMsgsCount, consumer);
}
return unackedMsgs;
}

Expand Down