diff --git a/tools/db_bench_tool.cc b/tools/db_bench_tool.cc
index 20abdd56e..7c6fb162a 100644
--- a/tools/db_bench_tool.cc
+++ b/tools/db_bench_tool.cc
@@ -525,6 +525,9 @@ DEFINE_bool(read_cache_direct_write, true,
 DEFINE_bool(read_cache_direct_read, true,
             "Whether to use Direct IO for reading from read cache");
 
+DEFINE_bool(use_keep_filter, false,
+            "Whether to use a noop compaction filter");
+
 static bool ValidateCacheNumshardbits(const char* flagname, int32_t value) {
   if (value >= 20) {
     fprintf(stderr, "Invalid value for --%s: %d, must be < 20\n",
@@ -2199,6 +2202,17 @@ class Benchmark {
     std::shared_ptr<TimestampEmulator> timestamp_emulator_;
   };
 
+  class KeepFilter : public CompactionFilter {
+   public:
+    virtual bool Filter(int /*level*/, const Slice& /*key*/,
+                        const Slice& /*value*/, std::string* /*new_value*/,
+                        bool* /*value_changed*/) const override {
+      return false;
+    }
+
+    virtual const char* Name() const override { return "KeepFilter"; }
+  };
+
   std::shared_ptr<Cache> NewCache(int64_t capacity) {
     if (capacity <= 0) {
       return nullptr;
@@ -3427,6 +3441,12 @@ void VerifyDBFromDB(std::string& truth_db_name) {
       }
       options.wal_dir = wal_dir;
     }
+
+    // KeepFilter is a noop filter, this can be used to test compaction filter
+    if (FLAGS_use_keep_filter) {
+      options.compaction_filter = new KeepFilter();
+      fprintf(stdout, "A noop compaction filter is used\n");
+    }
   }
 
   void Open(Options* opts) {