[GitHub] [pulsar] codelipenghui commented on issue #3014: Add default ackTimeout(30s) for dead letter policy

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codelipenghui commented on issue #3014: Add default ackTimeout(30s) for dead letter policy
URL: https://github.com/apache/pulsar/pull/3014#issuecomment-493850627
 
 
   @merlimat Thanks for reminding, i'm writing the documentation for dead letter topic, this will be a nice practice to encouraging using negativeAck while using dead letter topic.
   
   But I am worried about change this default now, because user properly already use dead letter topic for some scenes like delay message delivery, this change is likely to be abnormal when they upgrade the client version.
   
   So, I tend to encourage using negativeAck by the documentation.

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