From f5e0522d9261408aab8f7736ff9ab116b1e4358f Mon Sep 17 00:00:00 2001
From: Sergei Golubchik <serg@mariadb.org>
Date: Wed, 7 Dec 2016 13:06:14 +0100
Subject: [PATCH] MDEV-10388 MariaDB 10.1.x keeps (deleted) ML* files in tmpdir
 after LOAD DATA completes

truncate unused IO_CACHE backing store files in binlog_cache_data
to release the disk space they were occupying
---
 sql/log.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sql/log.cc b/sql/log.cc
index 077bbf5e711..dc87c39730c 100644
--- a/sql/log.cc
+++ b/sql/log.cc
@@ -263,6 +263,9 @@ public:
   {
     compute_statistics();
     truncate(0);
+    if(cache_log.file != -1)
+      my_chsize(cache_log.file, 0, 0, MYF(MY_WME));
+
     changes_to_non_trans_temp_table_flag= FALSE;
     incident= FALSE;
     before_stmt_pos= MY_OFF_T_UNDEF;