elasticsearch/logstash — pull request #1818 by wiibaa (2014-10-01 04:31:00+00:00)
Title: [filter/metrics] Fix flushing in metrics filter

As discovered in #1805, metrics filter is not correctly flushing events

The current spec was calling flush manually not relying on the pipeline periodic_flusher threads,
here is a proposal test case using the full agent to cover this case + fix to metrics filter based on the changed done to other flushing filters (multiline, spool) in #1545