From 3b37ab5def2bfa52601e6c1605c6193b38084772 Mon Sep 17 00:00:00 2001
From: Robert Yokota <rayokota@gmail.com>
Date: Thu, 10 May 2018 14:01:37 -0700
Subject: [PATCH] Improve err msg when connecting processor with global store

---
 .../streams/processor/internals/InternalTopologyBuilder.java  | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/streams/src/main/java/org/apache/kafka/streams/processor/internals/InternalTopologyBuilder.java b/streams/src/main/java/org/apache/kafka/streams/processor/internals/InternalTopologyBuilder.java
index b1d60a9ad886c..bfe8cda7da133 100644
--- a/streams/src/main/java/org/apache/kafka/streams/processor/internals/InternalTopologyBuilder.java
+++ b/streams/src/main/java/org/apache/kafka/streams/processor/internals/InternalTopologyBuilder.java
@@ -712,6 +712,10 @@ private void addGlobalStore(final String sourceName,
 
     private void connectProcessorAndStateStore(final String processorName,
                                                final String stateStoreName) {
+        if (globalStateStores.containsKey(stateStoreName)) {
+            throw new TopologyException("Global StateStore " + stateStoreName +
+                    " can be used by a Processor without being specified; it should not be explicitly passed.");
+        }
         if (!stateFactories.containsKey(stateStoreName)) {
             throw new TopologyException("StateStore " + stateStoreName + " is not added yet.");
         }