Details
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Improvement
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Resolution: Won't Fix
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Major - P3
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None
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2.2.0
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All
Description
Replace 3 O(log n) operations with 1 for mutable FieldRange objects:
inline FieldRange &FieldRangeSet::range( const char *fieldName ) {
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- map<string,FieldRange>::iterator f = _ranges.find( fieldName );
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- if ( f == _ranges.end() ) {
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- _ranges.insert( make_pair( string( fieldName ), universalRange() ) );
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- return _ranges.find( fieldName )->second;
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- }
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- return f->second;
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+ return _ranges.insert(make_pair(string(fieldName), universalRange())).first->second;
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}
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Should help mongos and mongod – see 'nolog' call graphs in SERVER-7331.
Attachments
Issue Links
- is related to
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SERVER-7331 Optimize mongos performance
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- Closed
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