bk commit into 5.0 tree (aelkin:1.2304) BUG#19402

[Andrei Elkin]

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ChangeSet@stripped, 2006-11-14 12:48:17+02:00, aelkin@stripped +2 -0
  bug#19402 SQL close to the size of the max_allowed_packet fails on the slave
  
  ver 5.0 and 5.1 refinement.
  adding to the MAX_SIZE_LOG_EVENT_STATUS estimation status vars and 
  EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN

  sql/log_event.cc@stripped, 2006-11-14 12:48:12+02:00, aelkin@stripped +1 -0
    assertion on size of status vars

  sql/log_event.h@stripped, 2006-11-14 12:48:12+02:00, aelkin@stripped +14 -4
    MAX_SIZE_LOG_EVENT_STATUS as the max bytes of contribution of status vars into repl
    message; MAX_SIZE_LOG_EVENT_STATUS is getting more wrt to 4.1 version.

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	aelkin
# Host:	dsl-hkibras-fe30f900-107.dhcp.inet.fi
# Root:	/home/elkin/MySQL/TEAM/BARE/5.0

--- 1.214/sql/log_event.cc	2006-11-14 12:48:25 +02:00
+++ 1.215/sql/log_event.cc	2006-11-14 12:48:25 +02:00
@@ -1212,6 +1212,7 @@ bool Query_log_event::write(IO_CACHE* fi
   
   /* Store length of status variables */
   status_vars_len= (uint) (start-start_of_status);
+  DBUG_ASSERT(status_vars_len <= MAX_SIZE_LOG_EVENT_STATUS);
   int2store(buf + Q_STATUS_VARS_LEN_OFFSET, status_vars_len);
 
   /*

--- 1.125/sql/log_event.h	2006-11-14 12:48:25 +02:00
+++ 1.126/sql/log_event.h	2006-11-14 12:48:25 +02:00
@@ -202,11 +202,21 @@ struct sql_ex_info
 
 /* 
   Max number of possible extra bytes in a replication event compared to a
-  packet (i.e. a query) sent from client to master.
+  packet (i.e. a query) sent from client to master;
+  First, an auxiliary log_event status vars estimation:
 */
-#define MAX_LOG_EVENT_HEADER   (LOG_EVENT_HEADER_LEN + /* write_header */ \
-				QUERY_HEADER_LEN     + /* write_data */   \
-				NAME_LEN + 1)
+#define MAX_SIZE_LOG_EVENT_STATUS (4 /* flags2 */   + \
+                                   8 /* sql mode */ + \
+                                   1 + 1 + 255 /* catalog */ + \
+                                   4 /* autoinc */ + \
+                                   6 /* charset */ + \
+                                   MAX_TIME_ZONE_NAME_LENGTH)
+#define MAX_LOG_EVENT_HEADER   ( /* in order of Query_log_event::write */ \
+  LOG_EVENT_HEADER_LEN + /* write_header */ \
+  QUERY_HEADER_LEN     + /* write_data */   \
+  EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN + /*write_post_header_for_derived */ \
+  MAX_SIZE_LOG_EVENT_STATUS + /* status */ \
+  NAME_LEN + 1)
 
 /* 
    Event header offsets;