Github user tillrohrmann commented on the issue:
https://github.com/apache/flink/pull/2358
The stashing is a feature which comes for free with Akka. Of course the
sending side should not rely on this behaviour when implementing its failure
treatment. But in cases where we have a race condition between the start-up of
the `RpcEndpoint` and a `RpcGateway` it should result into a slightly more
forgiving receiver behaviour.
I will rebase the PR and if Travis gives green light I would like to merge
this PR to the flip-6 feature branch if nobody objects.
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