MySQL 8.4 Reference Manual Including MySQL NDB Cluster 8.4
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.
The thread is processing a
STOP REPLICA
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
.