Note that Parallel Replication is about how a replication slave applies updates received from the master. SELECT statements do not modify the database and thus are never replicated. So Parallel Replication has no relevance to SELECT statements.
I do not know if tokudb has optimisations for running a single SELECT in parallel. The server layer of mariadb does not.
Note that Parallel Replication is about how a replication slave applies updates received from the master. SELECT statements do not modify the database and thus are never replicated. So Parallel Replication has no relevance to SELECT statements.
I do not know if tokudb has optimisations for running a single SELECT in parallel. The server layer of mariadb does not.