Github user IgorSasovets commented on the issue: https://github.com/apache/jmeter/pull/390 @pmouawad , are there some tests related to or based on deprecated MongoDB sampler (or mongo-java-driver version)? Because I can't get failed test name. I investigated it by removing all related to sampler data and got 7 failed tests. All of them related to operations with hashTree and SaveService, full stacktrace provided in *.txt. [get_error.txt](https://github.com/apache/jmeter/files/2164258/get_error.txt)
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