wu-sheng commented on a change in pull request #6913:
URL: https://github.com/apache/skywalking/pull/6913#discussion_r628710171



##########
File path: 
apm-sniffer/optional-plugins/mybatis-3.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/mybatis/SqlSessionOperationInterceptor.java
##########
@@ -40,7 +41,8 @@ public void beforeMethod(EnhancedInstance objInst, Method 
method, Object[] allAr
         if (ContextManager.isActive()) {
             lastSpan = ContextManager.activeSpan();
         }
-        if (lastSpan == null || lastSpan.getComponentId() != 
ComponentsDefine.MYBATIS.getId()) {
+        boolean isMyBatisEntryMethod = !(lastSpan instanceof NoopSpan) && 
(lastSpan == null || lastSpan.getComponentId() != 
ComponentsDefine.MYBATIS.getId());

Review comment:
       NoopSpan should be 100% transparent to the plugin, there is no case we 
should process like this.
   I know you are facing a memory leak, but what you did, I would say, it is 
caused by checking component id. Could you be clear why the logic exists before?




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