Replication starts at wrong position after having same server-id on master and slave

InnoDB monitor can fill disk and crash MySQL

MySQL 5.7 query optimizer rewrites query and gets different results than MySQL 5.5

To set the slow_query_log_use_global_control to "none" could cause an error.

Drop Table Stuck in "checking permissions" state for fulltext search tables

Remove AHI entries lazily after a table or index is dropped

Inconsistent error on slave for Update_rows event on table with non-exists partition

gcc-9 compilation warnings

Add gcc-9 to Travis CI

Add LLVM/clang 8 to Travis CI

The page tracker thread did not exit if the startup failed.