Jira issue originally created by user chriswest:
The former supported column type "timestamp" is not defined in Doctrine\DBAL\Types\Type.
Patches and suggestions follow.
Comment created by romanb:
See DDC-64 for where best to patch this.
Comment created by chriswest:
I think you need another type "Timestamp". Otherwise you cannot decide if it should be mapped to a "DATETIME" or "TIMESTAMP" column in mysql. A timestamp column only requires 4 bytes of storage space - datetime requires 8 bytes, so this is quite a decision regarding performance and storage space. a timestamp, of course, is limited to a date range. see http://dev.mysql.com/doc/refman/5.0/en/storage-requirements.html
I see that in D1 you mapped "timestamp" to "DATETIME". To be fully backwards compatible, a timstamp should be converted to a D2 "DateTime" type then (in this case ignore the first paragraph of this comment :)).
Issue was closed with resolution "Fixed"