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doris/be
Yingchun Lai 65cacbff7c [Bug] Fix bug that memory copy may overflow in MemIndex::load_segment (#4458)
Segment index file content is not set as 0 when it is constructed in write procedure, 
so when load index from this file, and meet a null VARCHAR cell,
the null field of this cell is 0, but the length field which is not initialized maybe a large random number,
then memory copy may cause overflow.
This patch fix this bug, and also skip useless memory copy to improve a bit of performance.
2020-08-30 21:08:55 +08:00
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