Davi Arnaut bc03c9ef19 Bug#40536: SELECT is blocked by INSERT DELAYED waiting on ...

upgrading lock, even with low_priority_updates

The problem is that there is no mechanism to control whether a
delayed insert takes a high or low priority lock on a table.

The solution is to modify the delayed insert thread ("handler")
to take into account the global value of low_priority_updates
when taking table locks. The value of low_priority_updates is
retrieved when the insert delayed thread is created and will
remain the same for the duration of the thread.

2009-02-03 15:16:24 -02:00

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