From dd383cadec0fbfba626bba72051f2dc548171015 Mon Sep 17 00:00:00 2001
From: He Zhenxing <zhenxing.he@sun.com>
Date: Sat, 21 Nov 2009 12:28:01 +0800
Subject: BUG#37148 Most callers of mysql_bin_log.write ignore the return
 result

This is the non-ndb part of the patch.

The return value of mysql_bin_log.write was ignored by most callers,
which may lead to inconsistent on master and slave if the transaction
was committed while the binlog was not correctly written. If
my_error() is call in mysql_bin_log.write, this could also lead to
assertion issue if my_ok() or my_error() is called after.

This fixed the problem by let the caller to check and handle the
return value of mysql_bin_log.write. This patch only adresses the
simple cases.


mysql-test/include/binlog_inject_error.inc:
  inject binlog write error when doing a query
mysql-test/suite/binlog/t/binlog_write_error.test:
  Simple test case to check if proper error is reported when injecting binlog write errors.
sql/events.cc:
  check return value of mysql_bin_log.write
sql/log.cc:
  check return value of mysql_bin_log.write
sql/log_event.cc:
  check return value of mysql_bin_log.write
sql/log_event_old.cc:
  check return value of mysql_bin_log.write
sql/mysql_priv.h:
  Change write_bin_log to return int instead of void
sql/rpl_injector.cc:
  check return value of writing binlog
sql/sp.cc:
  check return value of writing binlog
sql/sp_head.cc:
  return 1 if writing binlog failed
sql/sql_acl.cc:
  check return value of writing binlog
sql/sql_base.cc:
  check return value of writing binlog
sql/sql_class.h:
  Change binlog_show_create_table to return int
sql/sql_db.cc:
  Change write_to_binlog to return int
  check return value of writing binlog
sql/sql_delete.cc:
  check return value of writing binlog
sql/sql_insert.cc:
  check return value of writing binlog
sql/sql_load.cc:
  check return value of writing binlog
sql/sql_parse.cc:
  check return value of writing binlog
sql/sql_partition.cc:
  check return value of writing binlog
sql/sql_rename.cc:
  check return value of writing binlog
sql/sql_repl.cc:
  check return value of writing binlog
sql/sql_table.cc:
  Change write_bin_log to return int, and return 1 if there was error writing binlog
sql/sql_tablespace.cc:
  check return value of writing binlog
sql/sql_trigger.cc:
  check return value of writing binlog
sql/sql_udf.cc:
  check return value of writing binlog
sql/sql_update.cc:
  check return value of writing binlog
sql/sql_view.cc:
  check return value of writing binlog
---
 sql/sql_rename.cc | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

(limited to 'sql/sql_rename.cc')

diff --git a/sql/sql_rename.cc b/sql/sql_rename.cc
index dac96f2e9c4..e85e730db5b 100644
--- a/sql/sql_rename.cc
+++ b/sql/sql_rename.cc
@@ -34,6 +34,7 @@ static TABLE_LIST *reverse_table_list(TABLE_LIST *table_list);
 bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list, bool silent)
 {
   bool error= 1;
+  bool binlog_error= 0;
   TABLE_LIST *ren_table= 0;
   int to_table;
   char *rename_log_table[2]= {NULL, NULL};
@@ -174,11 +175,11 @@ bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list, bool silent)
   */
   pthread_mutex_unlock(&LOCK_open);
 
-  /* Lets hope this doesn't fail as the result will be messy */ 
   if (!silent && !error)
   {
-    write_bin_log(thd, TRUE, thd->query(), thd->query_length());
-    my_ok(thd);
+    binlog_error= write_bin_log(thd, TRUE, thd->query(), thd->query_length());
+    if (!binlog_error)
+      my_ok(thd);
   }
 
   if (!error)
@@ -190,7 +191,7 @@ bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list, bool silent)
 
 err:
   start_waiting_global_read_lock(thd);
-  DBUG_RETURN(error);
+  DBUG_RETURN(error || binlog_error);
 }
 
 
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