In this blog, I will discuss how parallel crash recovery in MySQL benefits several processes.
I recently filed an Oracle feature request to make crash recovery faster by running in multiple threads.
This might not seem very important, because MySQL does not crash that often. When it does crash, however, crash recovery can take 45 mins – as I showed in this post:
What is a big innodb_log_file_size?
Even in that case, it still might not be a big issue as you often failover to a slave.
However, crash recovery plays important part in the following processes:
- Backups with Percona XtraBackup (and …