Added retries to query executions in some tck cases.

tests/tck/conftest.py

@@ -412,7 +412,6 @@ def executing_query_with_retry(query, exec_ctx, request, secs, retryTimes):
     res = exec_ctx["result_set"]
     if not res.is_succeeded():
       retryCounter = 0
-      pdb.set_trace()
       while retryCounter < retryTimes:
         time.sleep(secs)
         exec_query(request, ngql, exec_ctx)

tests/tck/features/delete/DeleteVertexWithoutEdge.feature

@@ -17,7 +17,7 @@ Feature: delete vertex without edge
       CREATE EDGE e();
       """
     And wait 6 seconds
-    When executing query:
+    When executing query and retrying it on failure every 6 seconds for 3 times:
       """
       INSERT VERTEX t(id) VALUES 1:(1),2:(2),3:(3);
       INSERT EDGE e() VALUES 1->2:(),1->3:();
@@ -74,7 +74,7 @@ Feature: delete vertex without edge
       CREATE EDGE e();
       """
     And wait 6 seconds
-    When executing query:
+    When executing query and retrying it on failure every 6 seconds for 3 times:
       """
       INSERT VERTEX t(id) VALUES 1:(1),2:(2),3:(2);
       INSERT EDGE e() VALUES 1->2:(),1->3:();

tests/tck/features/insert/Insert.feature

@@ -547,7 +547,7 @@ Feature: Insert string vid of vertex and edge
       """
     And wait 6 seconds
     # test insert vertex
-    When try to execute query:
+    When try to execute query and retrying it on failure every 6 seconds for 3 times:
       """
       INSERT VERTEX person(id) VALUES "100":(1), "200":(1)
       """

tests/tck/features/insert/insertVertexOnly.feature

@@ -16,7 +16,7 @@ Feature: insert vertex without tag
       CREATE EDGE e();
       """
     And wait 6 seconds
-    When executing query:
+    When executing query and retrying it on failure every 6 seconds for 3 times:
       """
       INSERT VERTEX VALUES 1:(),2:(),3:();
       INSERT EDGE e() VALUES 1->2:(),2->3:();

tests/tck/features/lookup/LookupTag2.feature

@@ -58,7 +58,7 @@ Feature: Test lookup on tag index 2
     Then drop the used space
 
   Scenario Outline: [tag] scan without hints
-    When executing query:
+    When executing query and retrying it on failure every 6 seconds for 3 times:
       """
       LOOKUP ON
         lookup_tag_1