From 48bca2418fd7ee583c7fa01a8b2e9aa7a96733ad Mon Sep 17 00:00:00 2001
From: zxbu <32785355+zxbu@users.noreply.github.com>
Date: Tue, 21 May 2019 16:40:33 +0800
Subject: [PATCH] Casting  to 'ListCollectionsOperation' may produce
 'ClassCastException' (#2724)

---
 .../apm/plugin/mongodb/v3/MongoDBMethodInterceptor.java         | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/mongodb/v3/MongoDBMethodInterceptor.java b/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/mongodb/v3/MongoDBMethodInterceptor.java
index 9987e3d05..5f85d747a 100644
--- a/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/mongodb/v3/MongoDBMethodInterceptor.java
+++ b/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/mongodb/v3/MongoDBMethodInterceptor.java
@@ -100,7 +100,7 @@ public class MongoDBMethodInterceptor implements InstanceMethodsAroundIntercepto
             BsonDocument filter = ((ListCollectionsOperation)obj).getFilter();
             return limitFilter(filter.toString());
         } else if (obj instanceof MapReduceWithInlineResultsOperation) {
-            BsonDocument filter = ((ListCollectionsOperation)obj).getFilter();
+            BsonDocument filter = ((MapReduceWithInlineResultsOperation)obj).getFilter();
             return limitFilter(filter.toString());
         } else if (obj instanceof DeleteOperation) {
             List<DeleteRequest> writeRequestList = ((DeleteOperation)obj).getDeleteRequests();