[−][src]Trait rexrocksdb::CompactionFilter
CompactionFilter allows an application to modify/delete a key-value at
the time of compaction.
For more details, Please checkout rocksdb's documentation.
Required methods
fn filter(&mut self, level: usize, key: &[u8], value: &[u8]) -> bool
The compaction process invokes this method for kv that is being compacted. A return value of false indicates that the kv should be preserved in the output of this compaction run and a return value of true indicates that this key-value should be removed from the output of the compaction. The application can inspect the existing value of the key and make decision based on it.