jerrypeng edited a comment on issue #3224: Function option --subscription-type does not work URL: https://github.com/apache/pulsar/issues/3224#issuecomment-449929845 @ngjaying there is really no point for a function to use an exclusive subscription since the failover subscription can be viewed as a exclusive subscriptions with fault tolerance. We also removed the option for a function to use a exclusive subscription because it would also limit the parallelism of the function. When an exclusive subscription, only one instance of the function would be able to connect and read from the topic.
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