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(mysql.info)News-3.21.32

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Changes in release 3.21.32
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   * Fixed some possible race conditions when doing many reopen/close
     on the same tables under heavy load!  This can happen if you
     execute `mysqladmin refresh' often. This could in some very rare
     cases corrupt the header of the index file and cause error 126 or
     138.

   * Fixed fatal bug in `refresh()' when running with the
     `--skip-locking' option.  There was a "very small" time gap after
     a `mysqladmin refresh' when a table could be corrupted if one
     thread updated a table while another thread did `mysqladmin
     refresh' and another thread started a new update ont the same table
     before the first thread had finished.  A refresh (or
     `--flush-tables') will now not return until all used tables are
     closed!

   * `SELECT DISTINCT' with a `WHERE' clause that didn't match any rows
     returned a row in some contexts (bug only in 3.21.31).

   * `GROUP BY' + `ORDER BY' returned one empty row when no rows where
     found.

   * Fixed a bug in the range optimizer that wrote `Use_count: Wrong
     count for ...' in the error log file.