Fix compile

Summary: gcc on our dev boxes is not happy about __attribute__((unused))

Test Plan: compiles now

Reviewers: sdong, ljin

Reviewed By: ljin

Subscribers: leveldb

Differential Revision: https://reviews.facebook.net/D22707

table/block_based_table_builder.cc

@@ -116,7 +116,7 @@ class ShortenedIndexBuilder : public IndexBuilder {
  public:
   explicit ShortenedIndexBuilder(const Comparator* comparator)
       : IndexBuilder(comparator),
-        index_block_builder_(1 /* block_restart_interval == 1 */, comparator) {}
+        index_block_builder_(1 /* block_restart_interval == 1 */) {}
 
   virtual void AddIndexEntry(std::string* last_key_in_current_block,
                              const Slice* first_key_in_next_block,
@@ -420,7 +420,7 @@ struct BlockBasedTableBuilder::Rep {
         table_options(table_opt),
         internal_comparator(icomparator),
         file(f),
-        data_block(table_options.block_restart_interval, &internal_comparator),
+        data_block(table_options.block_restart_interval),
         internal_prefix_transform(options.prefix_extractor.get()),
         index_builder(CreateIndexBuilder(
               table_options.index_type, &internal_comparator,

table/block_builder.cc

@@ -41,10 +41,8 @@
 
 namespace rocksdb {
 
-BlockBuilder::BlockBuilder(int block_restart_interval,
-                           const Comparator* comparator)
+BlockBuilder::BlockBuilder(int block_restart_interval)
     : block_restart_interval_(block_restart_interval),
-      comparator_(comparator),
       restarts_(),
       counter_(0),
       finished_(false) {
@@ -96,8 +94,6 @@ void BlockBuilder::Add(const Slice& key, const Slice& value) {
   Slice last_key_piece(last_key_);
   assert(!finished_);
   assert(counter_ <= block_restart_interval_);
-  assert(buffer_.empty() // No values yet?
-         || comparator_->Compare(key, last_key_piece) > 0);
   size_t shared = 0;
   if (counter_ < block_restart_interval_) {
     // See how much sharing to do with previous string

table/block_builder.h

@@ -22,7 +22,7 @@ class BlockBuilder {
   BlockBuilder(const BlockBuilder&) = delete;
   void operator=(const BlockBuilder&) = delete;
   
-  BlockBuilder(int block_restart_interval, const Comparator* comparator);
+  explicit BlockBuilder(int block_restart_interval);
   
   // Reset the contents as if the BlockBuilder was just constructed.
   void Reset();
@@ -50,7 +50,6 @@ class BlockBuilder {
 
  private:
   const int          block_restart_interval_;
-  const Comparator* comparator_ __attribute__((unused));  // only used in assert
 
   std::string           buffer_;    // Destination buffer
   std::vector<uint32_t> restarts_;  // Restart points

table/block_test.cc

@@ -76,7 +76,7 @@ TEST(BlockTest, SimpleTest) {
 
   std::vector<std::string> keys;
   std::vector<std::string> values;
-  BlockBuilder builder(16, ic.get());
+  BlockBuilder builder(16);
   int num_records = 100000;
 
   GenerateRandomKVs(&keys, &values, 0, num_records);
@@ -132,8 +132,7 @@ BlockContents GetBlockContents(std::unique_ptr<BlockBuilder> *builder,
                                const std::vector<std::string> &keys,
                                const std::vector<std::string> &values,
                                const int prefix_group_size = 1) {
-  builder->reset(
-      new BlockBuilder(1 /* restart interval */, BytewiseComparator()));
+  builder->reset(new BlockBuilder(1 /* restart interval */));
 
   // Add only half of the keys
   for (size_t i = 0; i < keys.size(); ++i) {

table/meta_blocks.cc

@@ -16,9 +16,7 @@
 namespace rocksdb {
 
 MetaIndexBuilder::MetaIndexBuilder()
-    : meta_index_block_(
-        new BlockBuilder(1 /* restart interval */, BytewiseComparator())) {
-}
+    : meta_index_block_(new BlockBuilder(1 /* restart interval */)) {}
 
 void MetaIndexBuilder::Add(const std::string& key,
                            const BlockHandle& handle) {
@@ -35,9 +33,7 @@ Slice MetaIndexBuilder::Finish() {
 }
 
 PropertyBlockBuilder::PropertyBlockBuilder()
-  : properties_block_(
-      new BlockBuilder(1 /* restart interval */, BytewiseComparator())) {
-}
+    : properties_block_(new BlockBuilder(1 /* restart interval */)) {}
 
 void PropertyBlockBuilder::Add(const std::string& name,
                                const std::string& val) {

table/table_test.cc

@@ -244,8 +244,7 @@ class BlockConstructor: public Constructor {
                             const KVMap& data) {
     delete block_;
     block_ = nullptr;
-    BlockBuilder builder(table_options.block_restart_interval,
-                         &internal_comparator);
+    BlockBuilder builder(table_options.block_restart_interval);
 
     for (KVMap::const_iterator it = data.begin();
          it != data.end();
@@ -1054,7 +1053,7 @@ TEST(BlockBasedTableTest, BasicBlockBasedTableProperties) {
   ASSERT_EQ("", props.filter_policy_name);  // no filter policy is used
 
   // Verify data size.
-  BlockBuilder block_builder(1, options.comparator);
+  BlockBuilder block_builder(1);
   for (const auto& item : kvmap) {
     block_builder.Add(item.first, item.second);
   }