Fix unused member compile error

Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/4793

Differential Revision: D13509363

Pulled By: abhimadan

fbshipit-source-id: 530b4765e3335d6ecd016bfaa89645f8aa98c61f

db/range_del_aggregator.cc

@@ -154,17 +154,14 @@ TruncatedRangeDelIterator::SplitBySnapshot(
 }
 
 ForwardRangeDelIterator::ForwardRangeDelIterator(
-    const InternalKeyComparator* icmp,
-    const std::vector<std::unique_ptr<TruncatedRangeDelIterator>>* iters)
+    const InternalKeyComparator* icmp)
     : icmp_(icmp),
-      iters_(iters),
       unused_idx_(0),
       active_seqnums_(SeqMaxComparator()),
       active_iters_(EndKeyMinComparator(icmp)),
       inactive_iters_(StartKeyMinComparator(icmp)) {}
 
 bool ForwardRangeDelIterator::ShouldDelete(const ParsedInternalKey& parsed) {
-  assert(iters_ != nullptr);
   // Move active iterators that end before parsed.
   while (!active_iters_.empty() &&
          icmp_->Compare((*active_iters_.top())->end_key(), parsed) <= 0) {
@@ -200,17 +197,14 @@ void ForwardRangeDelIterator::Invalidate() {
 }
 
 ReverseRangeDelIterator::ReverseRangeDelIterator(
-    const InternalKeyComparator* icmp,
-    const std::vector<std::unique_ptr<TruncatedRangeDelIterator>>* iters)
+    const InternalKeyComparator* icmp)
     : icmp_(icmp),
-      iters_(iters),
       unused_idx_(0),
       active_seqnums_(SeqMaxComparator()),
       active_iters_(StartKeyMaxComparator(icmp)),
       inactive_iters_(EndKeyMaxComparator(icmp)) {}
 
 bool ReverseRangeDelIterator::ShouldDelete(const ParsedInternalKey& parsed) {
-  assert(iters_ != nullptr);
   // Move active iterators that start after parsed.
   while (!active_iters_.empty() &&
          icmp_->Compare(parsed, (*active_iters_.top())->start_key()) < 0) {

db/range_del_aggregator.h

@@ -110,9 +110,7 @@ struct StartKeyMinComparator {
 
 class ForwardRangeDelIterator {
  public:
-  ForwardRangeDelIterator(
-      const InternalKeyComparator* icmp,
-      const std::vector<std::unique_ptr<TruncatedRangeDelIterator>>* iters);
+  explicit ForwardRangeDelIterator(const InternalKeyComparator* icmp);
 
   bool ShouldDelete(const ParsedInternalKey& parsed);
   void Invalidate();
@@ -181,7 +179,6 @@ class ForwardRangeDelIterator {
   }
 
   const InternalKeyComparator* icmp_;
-  const std::vector<std::unique_ptr<TruncatedRangeDelIterator>>* iters_;
   size_t unused_idx_;
   ActiveSeqSet active_seqnums_;
   BinaryHeap<ActiveSeqSet::const_iterator, EndKeyMinComparator> active_iters_;
@@ -190,9 +187,7 @@ class ForwardRangeDelIterator {
 
 class ReverseRangeDelIterator {
  public:
-  ReverseRangeDelIterator(
-      const InternalKeyComparator* icmp,
-      const std::vector<std::unique_ptr<TruncatedRangeDelIterator>>* iters);
+  explicit ReverseRangeDelIterator(const InternalKeyComparator* icmp);
 
   bool ShouldDelete(const ParsedInternalKey& parsed);
   void Invalidate();
@@ -268,7 +263,6 @@ class ReverseRangeDelIterator {
   }
 
   const InternalKeyComparator* icmp_;
-  const std::vector<std::unique_ptr<TruncatedRangeDelIterator>>* iters_;
   size_t unused_idx_;
   ActiveSeqSet active_seqnums_;
   BinaryHeap<ActiveSeqSet::const_iterator, StartKeyMaxComparator> active_iters_;
@@ -311,8 +305,8 @@ class RangeDelAggregator {
     StripeRep(const InternalKeyComparator* icmp, SequenceNumber upper_bound,
               SequenceNumber lower_bound)
         : icmp_(icmp),
-          forward_iter_(icmp, &iters_),
-          reverse_iter_(icmp, &iters_),
+          forward_iter_(icmp),
+          reverse_iter_(icmp),
           upper_bound_(upper_bound),
           lower_bound_(lower_bound) {}