Make ES index requests synchronous. Prior to this, I had incorrectly assumed that elasticsearch acting as a client had a fixed-size thread pool to limit the number of active bulk index requests. This now executes bulk index requests one at a time.
Make ES index requests synchronous. Prior to this, I had incorrectly
assumed that elasticsearch acting as a client had a fixed-size thread
pool to limit the number of active bulk index requests. This now
executes bulk index requests one at a time.

tinglinux/logstash-kafka,tinglinux/logstash-kafka,Aloomaio/logstash-kafka,Aloomaio/logstash-kafka,joekiller/logstash-kafka,opentable/logstash-kafka,opentable/logstash-kafka,joekiller/logstash-kafka