[GitHub] chickenlj opened a new issue #2537: Increase the schedule frequency of HeartbeatTask.

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

chickenlj opened a new issue #2537: Increase the schedule frequency of HeartbeatTask.
URL: https://github.com/apache/incubator-dubbo/issues/2537
 
 
   Here is how heartbeat works in Dubbo:
   Heartbeat scheduler will schedule HeartbeatTask in every `heartbeat` time, when being scheduled, HeartbeatTask will internally continue to check the necessity of sending a heartbeat event (only send when it find that the idle interval `>heartbeat`).
   Consider different combinations of these two intervals: schedule interval and idle interval, we may have a chance of idle for `2*heartbeat` on a wire without any request/response or heartbeat event being sent.
   
   Though the timeout interval in Dubbo is `3*heartbeat`, and `2*heartbeat` idle would not mislead Dubbo to terminate the connection, we may need to increase the frequency of the scheduler to make it more accurate.

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