fluent/fluentd — pull request #386 by repeatedly (2014-07-16 15:46:24+00:00)
Title: Use an Integer instead of an Array for error count.

Using array for error count consumes lots of memory when
retry_limit is large. We don't use an item in @error_history,
so we can use simply number count instead of array based approach.

@frsyuki Could you check this PR?