Merge pull request #43 from DataDog/dylan.forciea/redres-1186-add-point-lookup-opts

[REDRES-1186] add gorocks point lookup options

Author: dforciea

v8/options.go

@@ -1043,6 +1043,17 @@ func (opts *Options) SetDumpMallocStats(value bool) {
 	C.rocksdb_options_set_dump_malloc_stats(opts.c, boolToChar(value))
 }
 
+// SetMemtableWholeKeyFiltering enable whole key bloom filter in memtable. Note this will only take effect
+// if memtable_prefix_bloom_size_ratio is not 0. Enabling whole key filtering
+// can potentially reduce CPU usage for point-look-ups.
+//
+// Default: false (disable)
+//
+// Dynamically changeable through SetOptions() API
+func (opts *Options) SetMemtableWholeKeyFiltering(value bool) {
+	C.rocksdb_options_set_memtable_whole_key_filtering(opts.c, boolToChar(value))
+}
+
 // EnableStatistics enable statistics.
 func (opts *Options) EnableStatistics() {
 	C.rocksdb_options_enable_statistics(opts.c)

v8/options_block_based_table.go

@@ -18,6 +18,16 @@ const (
 	KTwoLevelIndexSearchIndexType = 2
 )
 
+// DataBlockIndexType specifies index type that will be used for the data block.
+type DataBlockIndexType uint
+
+const (
+	// KDataBlockIndexTypeBinarySearch is traditional block type
+	KDataBlockIndexTypeBinarySearch DataBlockIndexType = 0
+	// KDataBlockIndexTypeBinarySearchAndHash additional hash index
+	KDataBlockIndexTypeBinarySearchAndHash DataBlockIndexType = 1
+)
+
 // BlockBasedTableOptions represents block-based table options.
 type BlockBasedTableOptions struct {
 	c *C.rocksdb_block_based_table_options_t
@@ -222,3 +232,16 @@ func (opts *BlockBasedTableOptions) SetFormatVersion(version int) {
 func (opts *BlockBasedTableOptions) SetIndexType(value IndexType) {
 	C.rocksdb_block_based_options_set_index_type(opts.c, C.int(value))
 }
+
+// SetDataBlockIndexType sets data block index type
+func (opts *BlockBasedTableOptions) SetDataBlockIndexType(value DataBlockIndexType) {
+	C.rocksdb_block_based_options_set_data_block_index_type(opts.c, C.int(value))
+}
+
+// SetDataBlockHashRatio is valid only when data_block_hash_index_type is
+// KDataBlockIndexTypeBinarySearchAndHash.
+//
+// Default value: 0.75
+func (opts *BlockBasedTableOptions) SetDataBlockHashRatio(value float64) {
+	C.rocksdb_block_based_options_set_data_block_hash_ratio(opts.c, C.double(value))
+}