max_allowed_packet bigger than 64MB

>Description:
I cannot set the parameter max_allowed_packet to values bigger than
64MB. According to the documentation, the upper limit for this
variable is 2GB.

>How-To-Repeat:
Set the variable max_allowed_packet to a value bigger than 64MB in
/etc/my.cnf and restart mysqld. "show variables like '%packet%'" gives
then the result of 62913536 bytes. When the variable is set to a value
smaller than 64MB, it is set to the requested value.

>Fix:
No fix available for me.

>Severity: serious
>Priority: low
>Category: mysql
>Class: sw-bug
>Release: mysql-4.0.3-beta-max (Official MySQL-max binary)
>Server: /usr/bin/mysqladmin Ver 8.23 Distrib 3.23.48, for suse-linux on i686
Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This software comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to modify and redistribute it under the GPL license

Server version 4.0.3-beta-max-log
Protocol version 10
Connection Localhost via UNIX socket
UNIX socket /tmp/mysql_3306.sock
Uptime: 43 min 24 sec

Threads: 3 Questions: 11 Slow queries: 0 Opens: 6 Flush tables: 1 Open tables: 0 Queries per second avg: 0.004
>Environment:

System: Linux succinat 2.4.19 #1 SMP Fri Aug 16 17:39:04 PDT 2002 i686 unknown
Architecture: i686

Some paths: /usr/bin/perl /usr/bin/make /usr/bin/gmake /usr/bin/gcc /usr/bin/cc
GCC: Reading specs from /usr/lib/gcc-lib/i486-suse-linux/2.95.3/specs
gcc version 2.95.3 20010315 (SuSE)
Compilation info: CC='gcc' CFLAGS='-O2 -mpentium ' CXX='gcc' CXXFLAGS='-O2 -mpentium -felide-constructors' LDFLAGS='-static'
LIBC:
-rwxr-xr-x 1 root root 1394238 Jul 12 17:29 /lib/libc.so.6
-rw-r--r-- 1 root root 25361424 Jul 12 15:58 /usr/lib/libc.a
-rw-r--r-- 1 root root 178 Mar 23 19:05 /usr/lib/libc.so
Configure command: ./configure --prefix=/usr/local/mysql '--with-comment=Official MySQL-max binary' --with-extra-charsets=complex --with-server-suffix=-max --enable-thread-safe-client --enable-local-infile --enable-assembler --with-mysqld-ldflags=-all-static --with-client-ldflags=-all-static --disable-shared --with-berkeley-db --with-raid --with-innodb 'CFLAGS=-O2 -mpentium ' 'CXXFLAGS=-O2 -mpentium -felide-constructors' CXX=gcc LDFLAGS=-static



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max_allowed_packet bigger than 64MB

Hi!

>>>>> "Christian" == Christian Gruber writes:

>> Description:
Christian> I cannot set the parameter max_allowed_packet to values bigger than
Christian> 64MB. According to the documentation, the upper limit for this
Christian> variable is 2GB.

2G is the packet limit for MySQL. I checked the source and it seams
that that we have in MySQL 4.0 left the max value to be 64M.

I will increase this to 2G for the 4.0.4 release.

(If you want to patch this, just change the following valiue in
sql/mysqld.cc:

{"max_allowed_packet", OPT_MAX_ALLOWED_PACKET,
"Max packetlength to send/receive from to server.",
(gptr*) &global_system_variables.max_allowed_packet,
(gptr*) &max_system_variables.max_allowed_packet, 0, GET_ULONG,
REQUIRED_ARG, 1024*1024L, 80, 64*1024*1024L, MALLOC_OVERHEAD, 1024, 0},
^
|
>How-To-Repeat:

Regards,
Monty

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