[t:2056], fix bug

git-svn-id: file:///svn/mysql/tokudb-engine/src@14855 c7de825b-a66e-492c-adef-691d508d4ae1

storage/tokudb/hatoku_cmp.cc

@@ -1425,12 +1425,14 @@ int tokudb_cmp_dbt_data(DB *file, const DBT *keya, const DBT *keyb) {
     // so just use a default comparison function
     //
     if (file->descriptor->size - row_desc_offset == 0) {
-        return memcmp(
-            keya->data, 
-            keyb->data, 
-            (keya->size < keyb->size) ? keya->size : keyb->size
-            );
+        int num_bytes_cmp = keya->size < keyb->size ? 
+            keya->size : keyb->size;
+        cmp = memcmp(keya->data,keyb->data,num_bytes_cmp);
+        if (cmp == 0 && (keya->size != keyb->size)) {
+            cmp = keya->size < keyb->size ? 1 : -1;
+        }
     }
+    else {
         cmp = tokudb_compare_two_keys(
             keya->data, 
             keya->size, 
@@ -1440,6 +1442,7 @@ int tokudb_cmp_dbt_data(DB *file, const DBT *keya, const DBT *keyb) {
             file->descriptor->size - row_desc_offset,
             false
             );
+    }
     return cmp;
 }