From eb8d4ee87c5f681caf8a1c9b4c03c90b71ff851f Mon Sep 17 00:00:00 2001
From: WeichenXu <WeichenXu123@outlook.com>
Date: Wed, 7 Sep 2016 21:46:27 -0700
Subject: [PATCH] fix_InterpreterProperty.equals

---
 .../org/apache/zeppelin/interpreter/InterpreterProperty.java     | 1 +
 1 file changed, 1 insertion(+)

diff --git a/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/InterpreterProperty.java b/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/InterpreterProperty.java
index c69de5d4a20..92a23d6054f 100644
--- a/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/InterpreterProperty.java
+++ b/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/InterpreterProperty.java
@@ -75,6 +75,7 @@ public int hashCode() {
   }
 
   public boolean equals(Object o) {
+    if (o == null) return false;
     return this.toString().equals(o.toString());
   }