Doubly skiplist for reverse scan (#116) #278
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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>
Signed-off-by: tabokie <xy.tao@outlook.com>
Signed-off-by: tabokie <xy.tao@outlook.com>
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:
InsertWithHintConcurrentlyFindRandomEntrySigned-off-by: tabokie xy.tao@outlook.com