merge with 3.23.48

use Getopt::Long;

$opt_distribution=$opt_user=$opt_result=$opt_config_options=$opt_config_env="";

$opt_dbd_options=$opt_perl_options=$opt_suffix="";

$opt_tmp=$version_suffix="";

$opt_tmp=$opt_version_suffix="";

$opt_help=$opt_Information=$opt_delete=$opt_debug=$opt_stage=$opt_rsh_mail=$opt_no_test=$opt_no_perl=$opt_with_low_memory=$opt_fast_benchmark=$opt_static_client=$opt_static_server=$opt_static_perl=$opt_sur=$opt_with_small_disk=$opt_local_perl=$opt_tcpip=$opt_build_thread=$opt_no_mysqltest=$opt_use_old_distribution=$opt_enable_shared=$opt_no_crash_me=$opt_no_strip=0;

$opt_innodb=$opt_bdb=0;

GetOptions("Information","help","distribution=s","user=s","result=s","delete","no-test","no-mysqltest","perl-files=s","debug","config-options=s","config-env=s","stage=i","rsh-mail","with-low-memory","fast-benchmark","tmp=s","static-client","static-server","static-perl","no-perl","local-perl","perl-options=s","sur","with-small-disk","dbd-options=s","tcpip","suffix=s","build-thread=i","innodb","bdb","use-old-distribution","enable-shared","no-crash-me","no-strip") || usage();

GetOptions("Information","help","distribution=s","user=s","result=s","delete","no-test","no-mysqltest","perl-files=s","debug","config-options=s","config-env=s","stage=i","rsh-mail","with-low-memory","fast-benchmark","tmp=s","static-client","static-server","static-perl","no-perl","local-perl","perl-options=s","sur","with-small-disk","dbd-options=s","tcpip","suffix=s","build-thread=i","innodb","bdb","use-old-distribution","enable-shared","no-crash-me","no-strip","version-suffix=s") || usage();

usage() if ($opt_help || $opt_Information);

usage() if (!$opt_distribution);

if ($opt_innodb || $opt_bdb)

if (($opt_innodb || $opt_bdb) && $opt_version_suffix eq "")

{

  $version_suffix="-max";

  $opt_version_suffix="-max";

}

chomp($host=`hostname`);

$full_host_name=$host;

info("Compiling MySQL$version_suffix at $host$suffix, stage: $opt_stage\n");

info("Compiling MySQL$opt_version_suffix at $host$suffix, stage: $opt_stage\n");

$connect_option= ($opt_tcpip ? "--host=$host" : "");

$host =~ /^([^.-]*)/;

$host=$1 . $opt_suffix;

$email="$opt_user\@mysql.com";

$pwd = `pwd`; chomp($pwd);

$log="$pwd/Logs/$host$version_suffix.log";

$opt_distribution =~ /(mysql-[^\/]*)\.tar/;

$log="$pwd/Logs/$host$opt_version_suffix.log";

$opt_distribution =~ /(mysql[^\/]*)\.tar/;

$ver=$1;

$gcc_version=which("gcc");

if (defined($gcc_version) && ! $opt_config_env)

select STDOUT;

$|=1;

safe_cd("$host");

safe_cd($host);

if ($opt_stage == 0 && ! $opt_use_old_distribution)

{

  safe_system("gunzip < $opt_distribution | $tar xf -");

  system("touch timestamp; find . -newer timestamp -print | xargs touch; rm -f timestamp");

  sleep(2);

  # Ensure that files we don't want to rebuild are newer than other files

  safe_cd($ver);

  foreach $name ("configure",

		 "Docs/include.texi",

		 "Docs/*.html", "Docs/manual.txt", "Docs/mysql.info",

  {

    system("touch $name");

  }

  # Fix some file modes in BDB tables that makes life harder.

  system("chmod -R u+rw .");

}

safe_cd($ver);

safe_cd("$pwd/$host/$ver");

if ($opt_stage <= 1)

{

  $opt_config_options.=" --with-low-memory" if ($opt_with_low_memory);

  {

    $opt_config_options.= " --with-innodb"

  }

  check_system("$opt_config_env ./configure --prefix=/usr/local/mysql \"--with-comment=Official MySQL$version_suffix binary\" --with-extra-charsets=complex \"--with-server-suffix=$version_suffix\" --enable-thread-safe-client $opt_config_options","Thank you for choosing MySQL");

  check_system("$opt_config_env ./configure --prefix=/usr/local/mysql \"--with-comment=Official MySQL$opt_version_suffix binary\" --with-extra-charsets=complex \"--with-server-suffix=$opt_version_suffix\" --enable-thread-safe-client $opt_config_options","Thank you for choosing MySQL");

  if (-d "$pwd/$host/include-mysql")

  {

    safe_system("cp -r $pwd/$host/include-mysql/* $pwd/$host/$ver/include");

  safe_system("gunzip < $tar_file | $tar xf -");

}

$tar_file =~ /(mysql-[^\/]*)\.tar/;

$tar_file =~ /(mysql[^\/]*)\.tar/;

$ver=$1;

$test_dir="$pwd/$host/test/$ver";

$ENV{"LD_LIBRARY_PATH"}= "$test_dir/lib:" . $ENV{"LD_LIBRARY_PATH"};

--dbd-options 'options'

Options for Makefile.PL when configuring msql-mysql-modules.

--version-suffix suffix

Can be used to set a suffix (normally 'com' or '-max') for a distribution

--with-low-memory

Use less memory when compiling.

    # remove the 'PUBLIC' file from distribution and copy LICENSE

    # on the toplevel of the directory instead. file 'PUBLIC' shouldn't

    # exist in the new mysql distributions, but let's be sure..

    `rm -f $destdir/PUBLIC`;

    `rm -f $destdir/PUBLIC $destdir/README`;

    `cp -p $WD/Docs/LICENSE $destdir/`;

    # fix file copyrights

  foreach my $Cfile (@Cfiles)

  {

    chop $Cfile;

    `replace \"This is free software,\\\\\\nand you are welcome to modify and redistribute it under the GPL license\" \"This is commercial software,\\\\nplease see the file LICENSE for details\" -- $Cfile`;

    `replace "This is free software," "This is commercial software," "and you are welcome to modify and redistribute it under the GPL license" "please see the file LICENSE for details" -- $Cfile`;

  }

}

not yet 100% confident in this code.

@menu

* News-3.23.49::                Changes in release 3.23.49

* News-3.23.48::                Changes in release 3.23.48

* News-3.23.47::                Changes in release 3.23.47

* News-3.23.46::                Changes in release 3.23.46

* News-3.23.0::                 Changes in release 3.23.0

@end menu

@node News-3.23.48, News-3.23.47, News-3.23.x, News-3.23.x

@node News-3.23.49, News-3.23.48, News-3.23.x, News-3.23.x

@appendixsubsec Changes in release 3.23.49

@itemize @bullet

@item

Fixed unlikely caching bug when doing a join without keys. In this case

the last used field for a table always returned @code{NULL}.

@end itemize

@node News-3.23.48, News-3.23.47, News-3.23.49, News-3.23.x

@appendixsubsec Changes in release 3.23.48

@itemize @bullet

@item

Changed to use @code{autoconf} 2.52 (from @code{autoconf} 2.13)

@item

Fixed bug in complicated join with @code{const} tables.

@item

Added internal safety checks for InnoDB.

@item

Some InnoDB variables was always shown in @code{SHOW VARIABLES} as

@code{OFF} on high-byte-first systems (like sparc).

@item

Fixed problem with one thread using an InnoDB table and another

thread doing an @code{ALTER TABLE} on the same table. Before that,

mysqld could crash with an assertion failure in row0row.c, line 474.

@item

Tuned the InnoDB SQL optimizer to favor more often index searches

over table scans.

@item

Fixed a performance problem with InnoDB tables when several large SELECT

queries are run concurrently on a multiprocessor Linux computer.  Large

CPU-bound SELECT queries will now also generally run faster on all

platforms.

@item

If MySQL binlogging is used, InnoDB now prints after crash recovery the

latest MySQL binlog name and the offset InnoDB was able to recover

to. This is useful, for example, when resynchronizing a master and a

slave database in replication.

@item

Added better error messages to help in installation problems of InnoDB tables.

@item

One can now recover also MySQL temporary tables which have become

orphaned inside the InnoDB tablespace.

@item

InnoDB now prevents a @code{FOREIGN KEY} declaration where the signedness

is not the same in the referencing and referenced integer columns.

@item

Calling @code{SHOW CREATE TABLE} or @code{SHOW TABLE STATUS} could cause

memory corruption and make mysqld to crash.  Especially at risk was

@code{mysqldump}, because it calls frequently @code{SHOW CREATE TABLE}.

@item

If inserts to several tables containing an auto-inc column were wrapped

inside one @code{LOCK TABLES}, InnoDB asserted in lock0lock.c.

@item

In 3.23.47 we allowed several @code{NULLS} in a @code{UNIQUE} secondary

index for an InnoDB table.  But @code{CHECK TABLE} was not relaxed: it

reports the table as corrupt.  @code{CHECK TABLE} no longer complains in

this situation.

@item

@code{SHOW GRANTS} now shows @code{REFERENCES} instead of @code{REFERENCE}.

@end itemize

	ulint		total_external_size = 0;

	ulint		i;

	ulint		j;

	ulint		add_on;

	mtr_t		mtr;

	n_cols = dict_index_get_n_unique(index);

				 + not_empty_flag)

		                	/ (BTR_KEY_VAL_ESTIMATE_N_PAGES

		                	   + total_external_size);

		/* If the tree is small, smaller than <

		10 * BTR_KEY_VAL_ESTIMATE_N_PAGES + total_external_size, then

		the above estimate is ok. For bigger trees it is common that we

		do not see any borders between key values in the few pages

		we pick. But still there may be BTR_KEY_VAL_ESTIMATE_N_PAGES

		different key values, or even more. Let us try to approximate

		that: */

		add_on = index->stat_n_leaf_pages /

		   (10 * (BTR_KEY_VAL_ESTIMATE_N_PAGES + total_external_size));

		if (add_on > BTR_KEY_VAL_ESTIMATE_N_PAGES) {

			add_on = BTR_KEY_VAL_ESTIMATE_N_PAGES;

		}

		index->stat_n_diff_key_vals[j] += add_on;

	}

	mem_free(n_diff);

	if (n_iterations > 30) {

		ut_print_timestamp(stderr);

		fprintf(stderr,

		" ***********************************************\n"

		"InnoDB: Warning: difficult to find free blocks from\n"

		"InnoDB: the buffer pool (%lu search iterations)! Consider\n"

		"InnoDB: increasing the buffer pool size.\n",