In 2.0 this affects pt-table-sync, pt-upgrade, and pt-online-schema-change. In 2.1 it affects the same minus pt-online-schema-change which is/was redesigned in 2.1.
In 2.0 this affects pt-table-sync, pt-upgrade, and pt-online- schema- change. In 2.1 it affects the same minus pt-online- schema- change which is/was redesigned in 2.1.