Sergei Petrunia 9b9e36ed49 MDEV-8779: mysqld got signal 11 in sql/opt_range_mrr.cc:100(step_down_to) ...

The crash was caused by range optimizer using RANGE_OPT_PARAM::min_key
(and max_key) to store keys. Buffer size was a good upper bound for
range analysis and partition pruning, but not for EITS selectivity
calculations.

Fixed by making these buffers variable-size. The sizes are calculated
from [pseudo]indexes used for range analysis.

2015-09-21 17:08:27 +03:00

7.8 KiB

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