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avoid calling FindFile twice in TwoLevelIterator for PlainTable

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Summary:
this is to reclaim the regression introduced in
https://reviews.facebook.net/D17853

Test Plan: make all check

Reviewers: igor, haobo, sdong, dhruba, yhchiang

Reviewed By: haobo

CC: leveldb

Differential Revision: https://reviews.facebook.net/D17985
This commit is contained in:
Lei Jin
2014-04-25 12:23:07 -07:00
parent d642c60bdc
commit ccaca59bee
9 changed files with 23 additions and 58 deletions
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7
table/two_level_iterator.h
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@@ -18,14 +18,15 @@ struct ReadOptions;
class InternalKeyComparator;
struct TwoLevelIteratorState {
explicit TwoLevelIteratorState(bool prefix_enabled)
: prefix_enabled(prefix_enabled) {}
explicit TwoLevelIteratorState(bool check_prefix_may_match)
: check_prefix_may_match(check_prefix_may_match) {}
virtual ~TwoLevelIteratorState() {}
virtual Iterator* NewSecondaryIterator(const Slice& handle) = 0;
virtual bool PrefixMayMatch(const Slice& internal_key) = 0;
bool prefix_enabled;
// If call PrefixMayMatch()
bool check_prefix_may_match;
};