I have a percona cluster of three servers and i am trying to perform rolling schema upgrade with RSU + node dropping method.
Basicaly what you do is:
1.remove the a server from the cluster,
2.change OSU method to RSU,
3.perform the schema change
4. Add server back to cluster
I did the above method on a small table and it all worked well how ever when i tried on a much bigger table (took like 5 hours to complete) when added the server back to cluster i got the following error:
Weird thing is that the change i made was indeed on relevant table on Column 3 from VARCAHR(40) to VARCHAR(100)…