diff --git a/integration_test/src/java/com/twitter/heron/integration_test/topology/one_bolt_multi_tasks/OneBoltMultiTasks.java b/integration_test/src/java/com/twitter/heron/integration_test/topology/one_bolt_multi_tasks/OneBoltMultiTasks.java
index bc1437759df..b52ea267fe3 100644
--- a/integration_test/src/java/com/twitter/heron/integration_test/topology/one_bolt_multi_tasks/OneBoltMultiTasks.java
+++ b/integration_test/src/java/com/twitter/heron/integration_test/topology/one_bolt_multi_tasks/OneBoltMultiTasks.java
@@ -33,7 +33,7 @@ private OneBoltMultiTasks(String[] args) throws MalformedURLException {
   @Override
   protected TestTopologyBuilder buildTopology(TestTopologyBuilder builder) {
 
-    builder.setSpout("ab-spout", new ABSpout(), 1);
+    builder.setSpout("ab-spout", new ABSpout(true), 1);
     builder.setBolt("identity-bolt", new IdentityBolt(new Fields("word")), 3)
         .shuffleGrouping("ab-spout");
     return builder;
diff --git a/integration_test/src/java/com/twitter/heron/integration_test/topology/one_bolt_multi_tasks/OneBoltMultiTasksResults.json b/integration_test/src/java/com/twitter/heron/integration_test/topology/one_bolt_multi_tasks/OneBoltMultiTasksResults.json
index b822614c4ef..43b827b22bb 100644
--- a/integration_test/src/java/com/twitter/heron/integration_test/topology/one_bolt_multi_tasks/OneBoltMultiTasksResults.json
+++ b/integration_test/src/java/com/twitter/heron/integration_test/topology/one_bolt_multi_tasks/OneBoltMultiTasksResults.json
@@ -1 +1 @@
-["A", "B", "A", "B", "A", "B", "A", "B", "A", "B"]
\ No newline at end of file
+["A_0", "B_1", "A_2", "B_3", "A_4", "B_5", "A_6", "B_7", "A_8", "B_9"]
\ No newline at end of file
diff --git a/integration_test/src/python/integration_test/common/spout/ab_spout.py b/integration_test/src/python/integration_test/common/spout/ab_spout.py
index 5408981f7ca..3862a40cc46 100644
--- a/integration_test/src/python/integration_test/common/spout/ab_spout.py
+++ b/integration_test/src/python/integration_test/common/spout/ab_spout.py
@@ -17,6 +17,7 @@
 '''ABSpout for integration test'''
 
 from heronpy.api.spout.spout import Spout
+from ..core import constants as integ_const
 
 #pylint: disable=unused-argument
 class ABSpout(Spout):
@@ -25,8 +26,11 @@ class ABSpout(Spout):
   def initialize(self, config, context):
     self.to_send = ["A", "B"]
     self.emitted = 0
+    self.append_stream_id = config[integ_const.USER_APPEND_STREAM_ID]
 
   def next_tuple(self):
     word = self.to_send[self.emitted % len(self.to_send)]
+    if self.append_stream_id:
+      word = word + "_" + self.emitted
     self.emitted += 1
     self.emit([word])
diff --git a/integration_test/src/python/integration_test/core/constants.py b/integration_test/src/python/integration_test/core/constants.py
index 219b1b8d71a..9ab9ce7118d 100644
--- a/integration_test/src/python/integration_test/core/constants.py
+++ b/integration_test/src/python/integration_test/core/constants.py
@@ -28,3 +28,5 @@
 USER_BOLT_CLASSPATH = "user.bolt.classpath"
 # user defined max executions
 USER_MAX_EXECUTIONS = "user.max.exec"
+# append stream id or not
+USER_APPEND_STREAM_ID = "user.append.stream_id"
diff --git a/integration_test/src/python/integration_test/core/test_topology_builder.py b/integration_test/src/python/integration_test/core/test_topology_builder.py
index 1fdfa5b50bb..0a56594d6c2 100644
--- a/integration_test/src/python/integration_test/core/test_topology_builder.py
+++ b/integration_test/src/python/integration_test/core/test_topology_builder.py
@@ -49,7 +49,8 @@ def __init__(self, name, http_server_url):
     self.prev = {}
 
   def add_spout(self, name, spout_cls, par, config=None,
-                optional_outputs=None, max_executions=None):
+                optional_outputs=None, max_executions=None,
+                append_sequence_id=False):
     """Add an integration_test spout"""
     user_spec = spout_cls.spec(name)
     spout_classpath = user_spec.python_class_path
@@ -70,6 +71,8 @@ def add_spout(self, name, spout_cls, par, config=None,
     if max_executions is not None:
       _config[integ_const.USER_MAX_EXECUTIONS] = max_executions
 
+    _config[integ_const.USER_APPEND_STREAM_ID] = append_sequence_id
+
     test_spec = IntegrationTestSpout.spec(name, par, _config,
                                           user_spout_classpath=spout_classpath,
                                           user_output_fields=user_outputs)
diff --git a/integration_test/src/python/integration_test/topology/one_bolt_multi_tasks/one_bolt_multi_tasks.py b/integration_test/src/python/integration_test/topology/one_bolt_multi_tasks/one_bolt_multi_tasks.py
index f7997e8c786..44477a8dbe9 100644
--- a/integration_test/src/python/integration_test/topology/one_bolt_multi_tasks/one_bolt_multi_tasks.py
+++ b/integration_test/src/python/integration_test/topology/one_bolt_multi_tasks/one_bolt_multi_tasks.py
@@ -24,7 +24,7 @@
 
 def one_bolt_multi_tasks_builder(topology_name, http_server_url):
   builder = TestTopologyBuilder(topology_name, http_server_url)
-  ab_spout = builder.add_spout("ab-spout", ABSpout, 1)
+  ab_spout = builder.add_spout("ab-spout", ABSpout, 1, append_sequence_id=True)
 
   builder.add_bolt("identity-bolt", IdentityBolt,
                    inputs={ab_spout: Grouping.SHUFFLE},