From 6e40957a6c3e9b028f5c73885c039b5c78d003cd Mon Sep 17 00:00:00 2001
From: Yicheng Qin <qycqycqycqycqyc@gmail.com>
Date: Thu, 5 Jun 2014 12:03:44 -0700
Subject: [PATCH] fix(log): truncate file and reset offset correctly

If we need to truncate the file because of a decoding error
then seek back to the last known good entry.
---
 log.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/log.go b/log.go
index 114c254..a08af09 100644
--- a/log.go
+++ b/log.go
@@ -168,9 +168,10 @@ func (l *Log) open(path string) error {
 			if err == io.EOF {
 				debugln("open.log.append: finish ")
 			} else {
-				if err = os.Truncate(path, readBytes); err != nil {
+				if err = l.file.Truncate(readBytes); err != nil {
 					return fmt.Errorf("raft.Log: Unable to recover: %v", err)
 				}
+				l.file.Seek(readBytes, os.SEEK_SET)
 			}
 			break
 		}