From d8be3113351929f12e4277f4306a1428a280d970 Mon Sep 17 00:00:00 2001
From: unknown <mats@romeo.(none)>
Date: Fri, 6 Oct 2006 10:17:02 +0200
Subject: BUG#19459 (BINLOG RBR command does not lock tables correctly causing
 crash for, e.g., NDB):

Before, mysqlbinlog printed table map events as a separate statement, so
when executing the event, the opened table was subsequently closed
when the statement ended. Instead, the row-based events that make up
a statement are now printed as *one* BINLOG statement, which means
that the table maps and the following *_rows_log_event events are
executed fully before the statement ends.

Changing implementation of BINLOG statement to be able to read the
emitted format, which now consists of several chunks of BASE64-encoded
data.


client/mysqlbinlog.cc:
  Using IO_CACHE to print events instead of directly to file.
  Factoring out code to write event header and base64 representation into
  separate function.
mysys/mf_iocache2.c:
  Correcting name in documentation.
sql/log_event.cc:
  Adding class Write_on_release_cache that holds an IO_CACHE and that
  will write contents of IO_CACHE to a designated file on destruction.

  Changing signature of event printing functions print_header() and print_base64()
  to write to IO_CACHE and changing *all* calls in those functions in accordance.
  This means that all printing functions now print to an IO_CACHE instead of to a file,
  and that the IO_CACHE is then copied to the file.

  The print() function have the same signature as before, but since it is
  using print_header() and print_base64(), the data will now be printed
  to an IO_CACHE and then copied to the file.

  Changing row-based replication events to incrementally build one
  BINLOG statement for all events making up a statement.
sql/log_event.h:
  Changing signature of event printing functions print_header() and
  print_base64() to write to an IO_CACHE instead of a file.

  Changing row-based replication events to incrementally build one
  BINLOG statement for all events making up a statement.

  Adding a head_cache and a body_cache to cache statement comment
  and statement body respectively. In addition, the head_cache is used
  when printing other events than the RBR events.
sql/sql_binlog.cc:
  Changing code to be able to decode several pieces of base64-encoded data
  for a BINLOG statement. The BINLOG statement now consists of several pieces
  of BASE64-encoded data, so once a block has been decoded and executed, the
  next block has to be read from the statement until there is no more
  data to read.
---
 mysys/mf_iocache2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'mysys')

diff --git a/mysys/mf_iocache2.c b/mysys/mf_iocache2.c
index d76b895aeb0..57a06e263a6 100644
--- a/mysys/mf_iocache2.c
+++ b/mysys/mf_iocache2.c
@@ -28,7 +28,7 @@
   Copy contents of an IO_CACHE to a file.
 
   SYNOPSIS
-    copy_io_cache_to_file()
+    my_b_copy_to_file()
     cache  IO_CACHE to copy from
     file   File to copy to
 
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