elasticsearch/elasticsearch — pull request #5629 by jpountz (2014-03-31 19:03:50+00:00)
Title: Do not propagate errors from onResult to onFailure.

The way that SearchServiceTransportAction executes actions on a local node
today would propagate exceptions thrown in onResult to onFailure.

I don't have seen it happening in practice, I'd just like to make sure the
described scenario can not happen.