For me this was due to the temp folder was stored at a FAT32 drive. Changes the temp directory to NTFS drive and the problem solved.
On my.ini file change the variable tmpdir or create one using tmpdir = Your\path
- Howto setup mysql-cluster (beginners tutorial) (teabreak.pk)
- Mysql Essentials Part 1 (slideshare.net)
- Mysql pathological case? (almirkaric.com)