On Thu, Apr 25, 2019 at 6:03 PM Federico Leva (Nemo) <nemowiki@gmail.com> wrote:

Alaa Sarhan, 25/04/19 17:38:
> Full migration is not possible unfortunately due to the current capacity
> of database master node.

Can you clarify whether it would also be too much load to write both to
the new table and the old wb_terms table for a transition period
(controlled by a configuration setting)?

The problem isn't that much because of load but because of disk space constraints on the master. Right now we do not have enough space to handle the duplication of data that it will be needed until wb_terms can be killed and that space will be reclaimed back.

The migration is on hold mostly because of that.

We do have the hardware already at the DC (T211613), we are racking, installing and setting it up, once done we will work on a master failover to promote a new host to master (which will have more disk space, more RAM, and faster disks).

Manuel.