xiaolong ran

**Describe alternatives you've considered** Set dead letter policy for consumer By default some message will redelivery so many times possible, even to the extent that it can be never stop....

**Describe alternatives you've considered** Reset the subscription associated with this consumer to a specific message publish time. for specific functional descriptions, refer to: [seek by msgID](https://pulsar.apache.org/api/client/org/apache/pulsar/client/api/Consumer.html#seek-org.apache.pulsar.client.api.MessageId-)

**Describe alternatives you've considered** Retrieves a message, waiting up to the specified wait time if necessary. for specific functional descriptions, refer to: [receive timeout](https://pulsar.apache.org/api/client/org/apache/pulsar/client/api/Consumer.html#receive-int-java.util.concurrent.TimeUnit-)

**Describe alternatives you've considered** Reset the subscription associated with this consumer to a specific message publish time.

**Describe alternatives you've considered** Change the HashingScheme used to chose the partition on where to publish a particular message. Standard hashing functions available are: - JavaStringHash - Murmur3_32Hash for specific...

**Describe alternatives you've considered** Add public encryption key, used by producer to encrypt the data key. At the time of producer creation, Pulsar client checks if there are keys added...

**Describe alternatives you've considered** Add all the properties in the provided map for specific functional descriptions, refer to:[properties](https://pulsar.apache.org/api/client/org/apache/pulsar/client/api/ProducerBuilder.html#properties-java.util.Map-)

**Describe alternatives you've considered** Set a name/value property with this producer. for specific functional descriptions, refer to:[property](https://pulsar.apache.org/api/client/org/apache/pulsar/client/api/ProducerBuilder.html#property-java.lang.String-java.lang.String-)

**Describe alternatives you've considered** for specific functional descriptions, refer to: [consumer intercept](https://pulsar.apache.org/api/client/org/apache/pulsar/client/api/ConsumerBuilder.html#intercept-org.apache.pulsar.client.api.ConsumerInterceptor...-)

**Describe alternatives you've considered** mainly used to intercept or modify messages for specific functional descriptions, refer to:[Producer Interceptor](https://pulsar.apache.org/api/client/org/apache/pulsar/client/api/ProducerBuilder.html#intercept-org.apache.pulsar.client.api.ProducerInterceptor...-)