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Merge 10.11 -> 11.2
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@ -757,6 +757,15 @@ The following specify which files/extra groups are read (specified before remain
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--optimizer-index-block-copy-cost=#
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Cost of copying a key block from the cache to intern
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storage as part of an index scan.
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--optimizer-join-limit-pref-ratio=#
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For queries with JOIN and ORDER BY LIMIT : make the
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optimizer consider a join order that allows to short-cut
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execution after producing #LIMIT matches if that promises
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N times speedup. (A conservative setting here would be is
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a high value, like 100 so the short-cutting plan is used
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if it promises a speedup of 100x or more). Short-cutting
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plans are inherently risky so the default is 0 which
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means do not consider this optimization
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--optimizer-key-compare-cost=#
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Cost of checking a key against the end key condition.
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--optimizer-key-copy-cost=#
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@ -1777,6 +1786,7 @@ optimizer-disk-read-cost 10.24
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optimizer-disk-read-ratio 0.02
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optimizer-extra-pruning-depth 8
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optimizer-index-block-copy-cost 0.0356
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optimizer-join-limit-pref-ratio 0
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optimizer-key-compare-cost 0.011361
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optimizer-key-copy-cost 0.015685
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optimizer-key-lookup-cost 0.435777
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