[MDEV-18622] Instant DDL, including drop column, change column ordering etc. Created: 2019-02-18  Updated: 2019-03-22  Resolved: 2019-03-22

Status: Closed
Project: MariaDB Server
Component/s: Storage Engine - InnoDB
Fix Version/s: 10.4.0

Type: Task Priority: Major
Reporter: musazhang Assignee: Unassigned
Resolution: Duplicate Votes: 0
Labels: None

Issue Links:
Duplicate
duplicates MDEV-15562 Instant DROP COLUMN or changing the o... Closed

 Description   

MySQL will rebuild table when dealing with request like drop column or change column ordering, as rebuilding cost a lot of time and block requests on referred tables. it may case the server unavailable.

So we should solve problems by using new method.

 Comments   
Comment by Marko Mäkelä [ 2019-03-22 ]

MDEV-15562 implemented exactly this in MariaDB 10.4.

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