Avi Kivity 29ce425862 db: introduce negative_mutation_reader concept ...

Similar to a mutation_reader, but limited: it only returns whether a key
is sure not to exist in some mutation source.  Non-blocking and expected
to execute fast.  Corresponds to an sstable bloom filter.

To avoid ambiguity, it doesn't return a bool, instead a longer but less
ambiguous "definitely_doesnt_exists" or "maybe_exists".

2015-08-09 22:00:44 +03:00

4.6 KiB

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