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Type: Improvement
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Resolution: Won't Fix
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Priority: Major - P3
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None
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Affects Version/s: None
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Component/s: Storage
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Storage Engines 2019-05-20, Storage Engines 2019-06-03
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(copied to CRM)
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0
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8
Timestamp safe unique index for 4.2 incorporates a duplicate key check/prevention algorithm. Older Unique index used to prevent duplicate keys in a different way. We put this algorithm to be timestamp safe.
Linkbench (LOAD_NODE_BULK) shows a performance penalty due to this check. This ticket tracks the effort in optimising the algorithm and get the performance back.