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a mysterious (to me) block of code in the middle of ha_recover



The ha_recover function in MySQL 5.5.28 has a block of code in the
middle of it labelled with WILL_BE_DELETED_LATER that gets compiled
into mysqld.  The ha_recover function in Mariadb 5.5.28a does not have
this code in it.  It appears that the code forces prepared
transactions to be rolled back in MySQL even when mysqld is past the
recover phase.

Does anyone know what this code does?

Does anyone know why this code exists in MySQL but not in Mariadb?


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