fluent/fluentd — pull request #300 by repeatedly (2014-04-21 10:37:09+00:00)
Title: Print warn message when flush_at_shutdown is true in buf_memory. refs #286

If the user changes `buf_file` to `buf_memory` with `flush_at_shutdown false`,
the user may discard buffered chunks unexpectedly.
I think printing ward message is better.

@sonots @tagomoris Please check.