Doubly skiplist for reverse scan #116
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Signed-off-by: Little-Wallace <bupt2013211450@gmail.com>
Signed-off-by: Little-Wallace <bupt2013211450@gmail.com>
Signed-off-by: Little-Wallace <bupt2013211450@gmail.com>
Signed-off-by: Little-Wallace <bupt2013211450@gmail.com>
This was referenced Aug 30, 2019
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Signed-off-by: Little-Wallace liuwei@pingcap.com When the iterator read keys in reverse order, each Prev() function cost O(log n) times. So I add prev pointer for every node in skiplist to improve the Prev() function.
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Signed-off-by: Little-Wallace liuwei@pingcap.com When the iterator read keys in reverse order, each Prev() function cost O(log n) times. So I add prev pointer for every node in skiplist to improve the Prev() function. Signed-off-by: tabokie <xy.tao@outlook.com>
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Ref #277 When the iterator read keys in reverse order, each Prev() function cost O(log n) times. So I add prev pointer for every node in skiplist to improve the Prev() function. Signed-off-by: Little-Wallace liuwei@pingcap.com Implemented new virtual functions: - `InsertWithHintConcurrently` - `FindRandomEntry` Signed-off-by: tabokie <xy.tao@outlook.com>
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Signed-off-by: Little-Wallace liuwei@pingcap.com
When the iterator read keys in reverse order, each Prev() function cost O(log n) times. So I add prev pointer for every node in skiplist to improve the Prev() function.