Yves, do you think it’s possible to sponsor development of online DDL and better partition support in MyRocks?

If I understand the problem correctly, Facebook does not need online DDL, because they are using OnlineSchemaChange for all schema changes, right?

ALTER TABLE mytable ADD PARTITION (PARTITION p8 VALUES LESS THAN (8000000))’;

from InnoDB master to MyRocks replica, I get:

[ERROR] [MY-010584] [Repl] Slave SQL for channel ”: Error ‘Got error 10 ‘Operation aborted: Failed to acquire lock due to rocksdb_max_row_locks limit’ from ROCKSDB’ on query. Default database: ‘xyz’. Query: ‘ALTER TABLE xyz.mytable ADD PARTITION (PARTITION p8 VALUES LESS THAN (8000000))’, Error_code: MY-001296
[Warning] [MY-010584] [Repl] Slave: Inplace partition altering is not supported Error_code: MY-000138

1.) is there any chance to execute ALTER TABLE through replication?
2.) is there any plan to support ADD/DROP PARTITION without rebuilding the whole table?

For us, this is a show stopper. I really wanted to use MyRocks, but I can’t 🙁

Thank you, Vojtech