Type:
Priority:
Resolution:
Fixed
Component/s:
None
Currently the loose scan code in opt_range.cc considers all indexes as possible for the access method. Due to inexact statistics it may happen that a loose scan is selected over a unique index.
This is clearly wrong since a "loose scan" over a unique index will read the same keys as a direct index scan, but the loose scan has more overhead.
relates to
MDEV-7118
Anemometer stop working after upgrade to from 5.6 to 10.0
Closed
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Task
Minor
MDEV-7118 Anemometer stop working after upgrade to from 5.6 to 10.0
Assigned to SergeyP for review.