Last updated on MARCH 08, 2017
Applies to:MySQL Server - Version 5.5 to 5.5 [Release 5.5]
Information in this document applies to any platform.
When restarting MySQL 5.5.20 or 5.5.21, MySQL fails to start and the following error is in the error log:
The issue will usually be encountered after using an ALTER TABLE statement to change the KEY_BLOCK_SIZE property for an InnoDB table, for example when switching from an uncompressed to a compressed table.
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