diff --git a/client/mysqltest.cc b/client/mysqltest.cc
index 205514f38d4..d0c4edd2b60 100644
--- a/client/mysqltest.cc
+++ b/client/mysqltest.cc
@@ -6966,7 +6966,7 @@ bool is_delimiter(const char* p)
   terminated by new line '\n' regardless how many "delimiter" it contain.
 */
 
-#define MAX_QUERY (256*1024*2) /* 256K -- a test in sp-big is >128K */
+#define MAX_QUERY (256*1024*1024*2) /* 256K -- a test in sp-big is >128K */
 static char read_command_buf[MAX_QUERY];
 
 int read_command(struct st_command** command_ptr)
diff --git a/storage/innobase/btr/btr0btr.cc b/storage/innobase/btr/btr0btr.cc
index 0aa8a432067..93a43594bdf 100644
--- a/storage/innobase/btr/btr0btr.cc
+++ b/storage/innobase/btr/btr0btr.cc
@@ -2155,13 +2155,15 @@ btr_insert_on_non_leaf_level_func(
 		tuple, &rec, &dummy_big_rec, 0, NULL, mtr);
 
 	if (err == DB_FAIL) {
+        int ps7318 = 0;
+        DBUG_EXECUTE_IF("PS-7318", ps7318=1;); 
 		err = btr_cur_pessimistic_insert(flags
 						 | BTR_NO_LOCKING_FLAG
 						 | BTR_KEEP_SYS_FLAG
 						 | BTR_NO_UNDO_LOG_FLAG,
 						 &cursor, &offsets, &heap,
 						 tuple, &rec,
-						 &dummy_big_rec, 0, NULL, mtr);
+						 &dummy_big_rec, 0, NULL, mtr, ps7318);
 		ut_a(err == DB_SUCCESS);
 	}
 
diff --git a/storage/innobase/btr/btr0cur.cc b/storage/innobase/btr/btr0cur.cc
index b3b818c7429..22ba21cc979 100644
--- a/storage/innobase/btr/btr0cur.cc
+++ b/storage/innobase/btr/btr0cur.cc
@@ -3370,7 +3370,8 @@ btr_cur_pessimistic_insert(
 				NULL */
 	ulint		n_ext,	/*!< in: number of externally stored columns */
 	que_thr_t*	thr,	/*!< in: query thread or NULL */
-	mtr_t*		mtr)	/*!< in/out: mini-transaction */
+	mtr_t*		mtr,
+    int         ps7318)	/*!< in/out: mini-transaction */
 {
 	dict_index_t*	index		= cursor->index;
 	big_rec_t*	big_rec_vec	= NULL;
@@ -3416,6 +3417,7 @@ btr_cur_pessimistic_insert(
 
 		success = fsp_reserve_free_extents(&n_reserved, index->space,
 						   n_extents, FSP_NORMAL, mtr);
+        DBUG_EXECUTE_IF("PS-7318", if(1 == ps7318) success=false;);
 		if (!success) {
 			return(DB_OUT_OF_FILE_SPACE);
 		}
diff --git a/storage/innobase/include/btr0cur.h b/storage/innobase/include/btr0cur.h
index 0d86d24871c..c306ebf22f3 100644
--- a/storage/innobase/include/btr0cur.h
+++ b/storage/innobase/include/btr0cur.h
@@ -348,7 +348,8 @@ btr_cur_pessimistic_insert(
 				NULL */
 	ulint		n_ext,	/*!< in: number of externally stored columns */
 	que_thr_t*	thr,	/*!< in: query thread or NULL */
-	mtr_t*		mtr)	/*!< in/out: mini-transaction */
+	mtr_t*		mtr,
+    int         ps7318 = 0)	/*!< in/out: mini-transaction */
 	MY_ATTRIBUTE((warn_unused_result));
 /*************************************************************//**
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