Marko Mäkelä 24062fed70 Remove the debug variables innodb_purge_stop_now, innodb_purge_run_now ...

The InnoDB purge subsystem can be best stopped by opening a read view,
for example by START TRANSACTION WITH CONSISTENT SNAPSHOT.

To ensure that everything is purged, use wait_all_purged.inc,
which waits for the History list length in SHOW ENGINE INNODB STATUS
to reach 0. Setting innodb_purge_run_now never guaranteed this.

2017-09-13 16:02:32 +03:00

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