MySQL 8.0 Reference Manual Including MySQL NDB Cluster 8.0
These thread states occur on a replica server but are associated with connection threads, not with the I/O or SQL threads.
The thread is processing a CHANGE
REPLICATION SOURCE TO statement (from MySQL
8.0.23) or CHANGE MASTER TO
statement (before MySQL 8.0.23).
The thread is processing a
STOP REPLICA |
SLAVE statement.
This state occurs after Creating table from master
dump.
Reading master dump table data
This state occurs after Opening master dump
table.
Rebuilding the index on master dump table
This state occurs after Reading master dump table
data.