Better comment for inplace_update_support
Summary: See https://github.com/facebook/rocksdb/issues/215 Test Plan: none Reviewers: dhruba, sdong, ljin, yhchiang, nkg- Reviewed By: nkg- Subscribers: leveldb Differential Revision: https://reviews.facebook.net/D20769
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@ -487,7 +487,9 @@ struct ColumnFamilyOptions {
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TablePropertiesCollectorFactories;
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TablePropertiesCollectorFactories table_properties_collector_factories;
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// Allows thread-safe inplace updates.
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// Allows thread-safe inplace updates. If this is true, there is no way to
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// achieve point-in-time consistency using snapshot or iterator (assuming
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// concurrent updates).
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// If inplace_callback function is not set,
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// Put(key, new_value) will update inplace the existing_value iff
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// * key exists in current memtable
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