Bug #15088 | No status variable exists to test join_buffer_size efficientcy | ||
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Submitted: | 21 Nov 2005 4:06 | Modified: | 15 Dec 2010 11:51 |
Reporter: | Matthew Montgomery | Email Updates: | |
Status: | Verified | Impact on me: | |
Category: | MySQL Server: Optimizer | Severity: | S4 (Feature request) |
Version: | 5.0 | OS: | Any (All) |
Assigned to: | Geir Høydalsvik | CPU Architecture: | Any |
[21 Nov 2005 4:06]
Matthew Montgomery
[16 May 2007 1:27]
MySQL Verification Team
With the added explanation of Sergey Petrunia's blog -- http://s.petrunia.net/blog/?p=18 It is obvious now that "Join_merg_passes" variables doesn't make sense. Still there is no status variable that indicates when join_buffer_size is exceeded or is configured in a wasteful manner.