diff --git a/storage/rocksdb/ha_rocksdb.cc b/storage/rocksdb/ha_rocksdb.cc
index c1c3191..0a98d18 100644
--- a/storage/rocksdb/ha_rocksdb.cc
+++ b/storage/rocksdb/ha_rocksdb.cc
@@ -10308,6 +10308,10 @@ int ha_rocksdb::info(uint flag) {
       if (stats.records == 0) {
         rdb->GetApproximateSizes(m_pk_descr->get_cf(), &r, 1, &sz,
                                  include_flags);
+        fprintf(stderr,
+                "AAA: GetApproximateSizes() call #1, value %g\n",
+                double(sz)/ROCKSDB_ASSUMED_KEY_VALUE_DISK_SIZE);
+
         stats.records+= sz/ROCKSDB_ASSUMED_KEY_VALUE_DISK_SIZE;
         stats.data_file_length+= sz;
       }
@@ -10326,6 +10330,9 @@ int ha_rocksdb::info(uint flag) {
         // cardinality for memtable only indxes will be reported as 0
         rdb->GetApproximateMemTableStats(m_pk_descr->get_cf(), r,
                                          &memtableCount, &memtableSize);
+        fprintf(stderr,
+                "AAA: GetApproximateMemTableStats() call#1 returns %ld \n",
+                (long)memtableCount);

         // Atomically update all of these fields at the same time
         if (cachetime > 0) {
@@ -11257,6 +11264,11 @@ ha_rows ha_rocksdb::records_in_range(uint inx, key_range *const min_key,
   ret = rows * sz / disk_size;
   uint64_t memTableCount;
   rdb->GetApproximateMemTableStats(kd.get_cf(), r, &memTableCount, &sz);
+
+  fprintf(stderr,
+          "AAA: GetApproximateMemTableStats() call#2 returns %ld\n",
+          (long)memTableCount);
+
   ret += memTableCount;

   /*
@@ -11408,6 +11420,10 @@ int ha_rocksdb::calculate_stats(const TABLE *const table_arg, THD *const thd,
     uint64_t memtableSize;
     rdb->GetApproximateMemTableStats(kd.get_cf(), r, &memtableCount,
                                      &memtableSize);
+    fprintf(stderr,
+            "AAA: GetApproximateMemTableStats() call #3 returns %ld\n",
+            (long)memtableCount);
+
     if (memtableCount < (uint64_t)stat.m_rows / 10) {
       // skip tables that already have enough stats from SST files to reduce
       // overhead and avoid degradation of big tables stats by sampling from