Is it possible to actually monitor number of connected clients on your
mysql cluster when you have cluster connection pooling enabled?
For example, in our case we have a MySQL Cluster node with 32 cores, which
we've allocated 30 to use ndb connection pooling. When running a mysqlslap
with a concurrency of, say, 60, I do not see that value show in
threads_connected. Nor, do I see it show processlist.
When I remove the ndb connection pooling, I accurately see the processlist
showing all connected clients. I assume this is because of how the ndb
connection pooling, in essence (correct me if I'm wrong), a mysqld child
process that is used to connect to the cluster, which maybe is retaining
it's own counters?? Is my thinking correct here, or is there a documented,
alternate way of monitoring connected clients when using ndb connection