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Query interruption with MySQL 5.7 using KILL QUERY in signal handler does no more work

Hi all,

I use the following technique to cancel a long running query:

In the SIGINT signal handler, I restart a connection and I perform a

   KILL QUERY mysql-process-id-of-running-query

This was working find with MySQL 5.6.

But with 5.7 (5.7.11), we get now a different result:

A) The query is still interrupted, but we no longer get an SQL error -1317.

B) For some reason, the program does not want to exit() - (must investigate)

Any clues?

With mysql it's working fine:

mysql> select sleep(10);
^C^C -- query aborted
| sleep(10) |
1 row in set (2.79 sec)

mysql> \q


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