Beat pipline blocked issues

{:timestamp=>"2016-07-08T16:42:35.906000+0000", :message=>"Beats input: the pipeline is blocked, temporary refusing new connection.", :reconnect_backoff_sleep=>0.5, :level=>:warn}

any configuration i need to make to solve this issue?

A blocked pipeline indicates that the outputs are stalled, e.g. because downstream servers (Elasticsearch or whatever) aren't accepting events.

I have the same problem,do you solve it ?