Problem
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In 5.6, columns of MYSQL_TYPE_GEOMETRY were represented in InnoDB using DATA_BLOB. In 5.7, this was changed to DATA_GEOMETRY, but tables upgraded from 5.6 still kept using DATA_BLOB. Further upgrading to 8.0 is now rejected for tables originating from 5.6 because the expected type is DATA_GEOMETRY while the actual type is DATA_BLOB. This is detected in dd_upgrade_match_single_col(), and makes upgrade fail.

Solution
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Ignore datatype mismatch for datatype DATA_GEOMETRY. The correct datatype is reflected in the metadata after the upgrade is complete.

RB# 25704
Reviewed By: Debarun Banerjee <debarun.banerjee@oracle.com>