Rich Prohaska <[email protected]> writes: > I have tokudb kill query working with parallel replication. Needed to > attach the mysql thd pointer to each lock request, and use the thd as a key > into the pending lock requests to find the one being used by a particular > thd. Once found, this lock request is immediately completed with a lock > timeout result. Also needed to rearrange the lock wait for code so that > the callback is called when not holding any tokudb locks.
Ok, sounds great! > This solves 1 or 10 parallel replication stalls with tokudb. The remainder > require the tokudb lock timer to pop. > > The problem is that the parallel replicator attempts to kill the query for > a mysql slave thread that is waiting for a prior txn to complete. This > does not have any effect on tokudb. The workaround for now is to use an > extremely small tokudb lock timeout so that the stalls are short. Hm, that sounds like a problem with the parallel replication code. It should be normal that a thread needs to be killed in "waiting for prior txn", and it should work. I will look into this. Is your latest kill query code on github? Thanks, - Kristian. _______________________________________________ Mailing list: https://launchpad.net/~maria-developers Post to : [email protected] Unsubscribe : https://launchpad.net/~maria-developers More help : https://help.launchpad.net/ListHelp
