fix: avoiding burning cpu if all partitions are paused #2532
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Signed-off-by: napallday <bzx0619@gmail.com>
dnwe
approved these changes
Jul 29, 2023
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Sarama has addressed the issue of submitting empty fetch requests after calling
PauseAll, as seen in #2143. However, there is still a CPU utilization problem.The root cause lies in two operations:
In
subscriptionConsumer, ifresponseis nil, it immediately attempts to fetch from thebc.newSubscriptionschannel.In
subscriptionManager, it continuously sendsniltobc.newSubscriptions.These two operations alternate indefinitely until a rebalance or until
ResumeAll/Resumeis called. Consequently, this leads to the CPU burn issue.