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kv/RocksDBStore: implement rm_single_delete

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Use SingleDelete to delete keys which were never overwritten.

Signed-off-by: Jianjian Huo <jianjian.huo@ssi.samsung.com>
This commit is contained in:
Jianjian Huo 2016-04-04 14:44:53 -07:00
parent 9c60532eae
commit 2089cff5b5
2 changed files with 13 additions and 4 deletions
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6
src/kv/RocksDBStore.cc
View File

@ -437,6 +437,12 @@ void RocksDBStore::RocksDBTransactionImpl::rmkey(const string &prefix,
bat->Delete(combine_strings(prefix, k)); bat->Delete(combine_strings(prefix, k));
} }
void RocksDBStore::RocksDBTransactionImpl::rm_single_key(const string &prefix,
const string &k)
{
bat->SingleDelete(combine_strings(prefix, k));
}
void RocksDBStore::RocksDBTransactionImpl::rmkeys_by_prefix(const string &prefix) void RocksDBStore::RocksDBTransactionImpl::rmkeys_by_prefix(const string &prefix)
{ {
KeyValueDB::Iterator it = db->get_iterator(prefix); KeyValueDB::Iterator it = db->get_iterator(prefix);

11
src/kv/RocksDBStore.h
View File

@ -147,17 +147,20 @@ public:
void set( void set(
const string &prefix, const string &prefix,
const string &k, const string &k,
const bufferlist &bl); const bufferlist &bl) override;
void rmkey( void rmkey(
const string &prefix, const string &prefix,
const string &k); const string &k) override;
void rm_single_key(
const string &prefix,
const string &k) override;
void rmkeys_by_prefix( void rmkeys_by_prefix(
const string &prefix const string &prefix
); ) override;
void merge( void merge(
const string& prefix, const string& prefix,
const string& k, const string& k,
const bufferlist &bl); const bufferlist &bl) override;
}; };
KeyValueDB::Transaction get_transaction() { KeyValueDB::Transaction get_transaction() {