MyBatis CacheNamespaceRef causes IllegalArgumentException

MyBatis version

3.5.4

Database vendor and version

hsqldb

Test case or example project

unit test for cachenamespaceref #1873 https://github.com/mybatis/mybatis-3/pull/1873

Steps to reproduce

Annotated mapper with @CacheNamespaceRef,when the mapper class is parsed before the definer mapper of the refered cache,this may happen.

Expected result

unit test passed

Actual result

throws exception: java.lang.IllegalArgumentException: Result Maps collection already contains value for dao.BusinessDao.selectUsers-void

Comment From: harawata

Thank you for the report and the test, @xingxingup88 ! I will look into it.

Comment From: harawata

@xingxingup88 , The fix has already been committed and is verifiable in the latest 3.5.5-SNAPSHOT. Let me know if you noticed anything. Thanks again for your work!