shibd commented on code in PR #991:
URL: https://github.com/apache/pulsar-client-go/pull/991#discussion_r1142204396
##########
pulsar/consumer_partition.go:
##########
@@ -1752,6 +1762,37 @@ func (pc *partitionConsumer) markScaleIfNeed() {
}
}
+func (pc *partitionConsumer) reserveMemory(size int64) {
+ pc.client.memLimit.ForceReserveMemory(size)
+ if pc.client.memLimit.CurrentUsagePercent() >=
receiverQueueShrinkMemThreshold {
Review Comment:
> OK, I see. But even in Java client, reduceReceiverQueue() can not free
memory immediately. It just controls next flow to prefetch fewer messages.
> It just controls next flow to prefetch fewer messages.
Yes, We need these inactive consumers to reduce the size of the pull flow so
that it can give memory to more active consumers.
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