[GitHub] sijie opened a new issue #1267: Improve failover subscription for non-partitioned topic

[GitBox <gi...@apache.org>]

sijie opened a new issue #1267: Improve failover subscription for non-partitioned topic
URL: https://github.com/apache/incubator-pulsar/issues/1267
 
 
   *Problem*
   
   Currently failover subscription is sorting the consumers. so if a consumer who consumer name is always the first consumer after sorting and the consumer has flaky network where it joins and leaves, this would cause the whole subscription getting into a *flaky* state, where the "active" consumer joins and leaves, no consumer is actually elected as "active" and consuming the messages.
   
   The sorting logic is useful for partitioned topics. However it is not necessarily required by non-partitioned topic. So we should change the logic to not sort the consumers and make the "active" consumer stabilize no matter how other consumers joining the subscription.

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