MySQL Reference Manual for version 4.0.18.
14.4.16.23 MySQL/InnoDB-4.0.4, October 2, 2002
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We again use unbuffered disk I/O in Windows. Windows XP and Windows 2000
read performance seems to be very poor with normal I/O.
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Increased the max key length of InnoDB tables from 500 to 1024 bytes.
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Increased the table comment field in SHOW TABLE STATUS so that
up to 16000 characters of foreign key definitions can be printed there.
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The auto-increment counter is no longer incremented if
an insert of a row immediately fails in an error.
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Allow dropping and creating a table even if
innodb_force_recovery is set. One can use this to drop
a table which would cause a crash in rollback or purge,
or if a failed table import causes a runaway rollback in recovery.
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Fixed a bug: Using ORDER BY primarykey DESC in 4.0.3 causes
an assertion failure in btr0pcur.c, line 203.
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Fixed a bug: fast shutdown (which is the default) sometimes
was slowed down by purge and insert buffer merge.
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Fixed a bug: doing a big SELECT from a table where
no rows were visible in a consistent read could cause
a very long (> 600 seconds) semaphore wait in btr0cur.c line 310.
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Fixed a bug: if the MySQL query cache was used, it did not get
invalidated by a modification done by ON DELETE CASCADE or ...SET NULL.
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Fixed a bug: if you created a temporary table inside LOCK TABLES,
and used that temporary table, that caused an assertion failure
in ha_innodb.cc.
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Fixed a bug: if you set innodb_flush_log_at_trx_commit to 1, SHOW
VARIABLES would show its value as 16 million.
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