maria-developers team mailing list archive
-
maria-developers team
-
Mailing list archive
-
Message #06059
Re: More Secure Kill Command
sergei... one more point... i was looking the mk-kill
http://linux.die.net/man/1/mk-kill
there's some cases where we want to kill a thread that's no running any
query and we need to kill it only when it is not running any query, in
other words i can't use kill thread id, i must use kill query id....
the point here is "how query id is increased?" for example..
(query id = 0 thread id = 10) <- kill query id =0
[query received]
query id ++ (query id = 1 thread id = 10)
SELECT * FROM TABLE <- kill query id =1
[query done]
(query id = 1 thread id = 10) <- kill query id =1
[query received]
query id ++ (query id = 2 thread id = 10)
SELECT * FROM TABLE <- kill query id =2
[query done]
(query id = 2 thread id = 10) <- kill query id =2
(query id = 2 thread id = 10) <- kill query id =2
if i send a KILL QUERY ID = 2, i will only kill the last SELECT, or if the
select is done, i will kill the thread with the last executed query id = 2
see the problem? the query id can't be reseted, and it MUST be increased
only when we START a new query, not at the end of query, example:
(query id = 0 thread id = 10) <- kill query id =0
[query received] (query id = 0 thread id = 10)
*SELECT * FROM TABLE <- kill query id =0*
query id ++ (query id = 1 thread id = 10)
[query done]
*(query id = 1 thread id = 10) <- **kill query id =1 !!!!*
[query received] (query id = 1 thread id = 10)
*SELECT * FROM TABLE <- kill query id =1 !!!!*
query id ++ (query id = 2 thread id = 10)
[query done]
(query id = 2 thread id = 10) <- kill query id =2
---
Is the QUERY ID increased ONLY WHEN A QUERY START, AND the QUERY ID isn't
reseted AFTER query execution?
If yes, this is ok, we can kill a thread that is not running a query
without problems using query id
in this case no problems...
bye
Follow ups
References
-
More Secure Kill Command
From: Roberto Spadim, 2013-08-16
-
Re: More Secure Kill Command
From: Eric Bergen, 2013-08-17
-
Re: More Secure Kill Command
From: Sergei Golubchik, 2013-08-17
-
Re: More Secure Kill Command
From: Roberto Spadim, 2013-08-17
-
Re: More Secure Kill Command
From: Sergei Golubchik, 2013-08-17
-
Re: More Secure Kill Command
From: Sergei Golubchik, 2013-08-17
-
Re: More Secure Kill Command
From: Roberto Spadim, 2013-08-17
-
Re: More Secure Kill Command
From: Sergei Golubchik, 2013-08-17
-
Re: More Secure Kill Command
From: Roberto Spadim, 2013-08-17
-
Re: More Secure Kill Command
From: Roberto Spadim, 2013-08-17