Thank you for the post – it is very good news. It means that Oracle/MySQL team is starting to address real urgent needs of MySQL users. However, talking about MySQL parallel query implementation we should mention Justin Swanhart who
released the first implementation for MySQL parallel queries in 2014 – five years ago. Unfortunately, it was quite difficult to install.

What surprises me that if this is such important and fundamental feature (and I think, it is), why it was mentioned so briefly in corresponding documentation on MySQL site? Does it mean that Sunny Bains (its implementor according to
blog https://mysqlserverteam.com/the-mysql-8-0-14-maintenance-release-is-generally-available/) just a little bit shy of his achievement? Or this parallel query execution is just hack-like use of new functionality? If this is just a hack, it could be
that we have to wait quite a long time for the second step in MySQL parallel query implementation.

I am also not sure how innodb-parallel-read-threads flag works in case of MySQL server running in virtual machine. According to the article, the higher number of threads leads to improved performance. It means that increasing the number of virtual CPUs should be beneficial. However, we also know (https://theithollow.com/2013/01/21/the-effect-of-too-many-virtual-cpus/) that too many virtual CPUs have decreasing effect on server performance. I wonder how this contradiction could be resolved? Is it possible to resolve it at all?