Dear Apache Pulsar Team, I hope this email finds you well. I am writing to seek clarification regarding the *deadLetterPolicy* attribute in the *ConsumerConfigurationData* class within Apache Pulsar.
As a user of Apache Pulsar, we have been utilizing *PulsarSpout* exposed by the pulsar-storm adaptor within an Apache Storm topology for message consumption from Pulsar topics. Recently, we encountered an issue where the *deadLetterPolicy* that we set on the *PulsarSpout* seems to be lost when the topology is started. Upon investigation, we found that the *deadLetterPolicy* attribute in *ConsumerConfigurationData* is marked as *transient*. Due to Storm topologies being serialized and transferred from the nimbus to workers for execution, the transient nature of this attribute results in the loss of our specified configuration. Could you kindly provide insights into why this attribute is marked as transient and how we can ensure that the *deadLetterPolicy* configuration persists across the serialization process in Apache Storm? We believe that implementing the *java.io.Serializable* interface in the *DeadLetterPolicy* class should eliminate the need for the *transient* keyword. If this is accurate, we are prepared to submit a pull request accordingly. Any advice or best practices for managing this scenario within Apache Storm using Pulsar would be greatly appreciated. Thank you very much for your assistance. Looking forward to your response. Best regards, Anurag -- *-----------------------------------------------------------------------------------------* *This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error, please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee, you should not disseminate, distribute or copy this email. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. If you are not the intended recipient, you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.***** **** *Any views or opinions presented in this email are solely those of the author and do not necessarily represent those of the organization. Any information on shares, debentures or similar instruments, recommended product pricing, valuations and the like are for information purposes only. It is not meant to be an instruction or recommendation, as the case may be, to buy or to sell securities, products, services nor an offer to buy or sell securities, products or services unless specifically stated to be so on behalf of the Flipkart group. Employees of the Flipkart group of companies are expressly required not to make defamatory statements and not to infringe or authorise any infringement of copyright or any other legal right by email communications. Any such communication is contrary to organizational policy and outside the scope of the employment of the individual concerned. The organization will not accept any liability in respect of such communication, and the employee responsible will be personally liable for any damages or other liability arising.***** **** *Our organization accepts no liability for the content of this email, or for the consequences of any actions taken on the basis of the information *provided,* unless that information is subsequently confirmed in writing. If you are not the intended recipient, you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.* _-----------------------------------------------------------------------------------------_
