From 22537194912964b0084803d27f91a6a819943c15 Mon Sep 17 00:00:00 2001
From: David Wood <dwood@eglp.com>
Date: Sun, 31 Jan 2016 06:08:01 +0000
Subject: [PATCH] in_tail: avoid unnecessary open()s

---
 lib/fluent/plugin/in_tail.rb | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/lib/fluent/plugin/in_tail.rb b/lib/fluent/plugin/in_tail.rb
index 68c3bc476f..ae46483366 100644
--- a/lib/fluent/plugin/in_tail.rb
+++ b/lib/fluent/plugin/in_tail.rb
@@ -586,8 +586,7 @@ def initialize(path, log, &on_rotate)
 
         def on_notify
           begin
-            io = FileWrapper.open(@path)
-            stat = io.stat
+            stat = FileWrapper.stat(@path)
             inode = stat.ino
             fsize = stat.size
           rescue Errno::ENOENT
@@ -599,13 +598,14 @@ def on_notify
           begin
             if @inode != inode || fsize < @fsize
               # rotated or truncated
+              begin
+                io = FileWrapper.open(@path)
+              rescue Errno::ENOENT
+              end
               @on_rotate.call(io)
-              io = nil
             end
             @inode = inode
             @fsize = fsize
-          ensure
-            io.close if io
           end
 
         rescue