From 55302e9e285d13ae5eda021420d1a3ea6ca21afc Mon Sep 17 00:00:00 2001
From: Saj Goonatilleke <sg@redu.cx>
Date: Mon, 16 Jul 2012 15:33:25 +1000
Subject: [PATCH] Truncate short write from the AOF

If Redis only manages to write out a partial buffer, the AOF file won't
load back into Redis the next time it starts up.  It is better to
discard the short write than waste time running redis-check-aof.
---
 src/aof.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/aof.c b/src/aof.c
index 09bfb0492..7c9bbdcb5 100644
--- a/src/aof.c
+++ b/src/aof.c
@@ -250,6 +250,13 @@ void flushAppendOnlyFile(int force) {
                                    strerror(errno),
                                    (long)nwritten,
                                    (long)sdslen(server.aof_buf));
+
+            if (ftruncate(server.aof_fd, server.aof_current_size) == -1) {
+                redisLog(REDIS_WARNING, "Could not remove short write "
+                         "from the append-only file.  Redis may refuse "
+                         "to load the AOF the next time it starts.  "
+                         "ftruncate: %s", strerror(errno));
+            }
         }
         exit(1);
     }
-- 
GitLab