0
votes
1answer
65 views

Replicate from slaves to master and viceversa

I've a great dilema here and didn't know how to solve it. I need to replicate a few tables from MySQL DB (slaves) to MySQL DB (master). Take as an example this: MySQL DB (master) table1 table2 ...
3
votes
2answers
405 views

Online Schema Change Strategies for Large MySQL Tables

I'm curious to hear strategies and methods people use for performing alters on very large tables in MySQL. Large could be any number of rows or size that would be impacting to alter. For the sake of ...
7
votes
4answers
3k views

Modifying columns of very large mysql tables with little or no downtime

I periodically need to make changes to tables in mysql 5.1, mostly adding columns. Very simple with the alter table command. But my tables have up to 40 million rows now and they are growing fast... ...