Hi everyone,

 I've got an error "java.io.IOException: Too many open files" on usage 
EmbeddedKafkaCluster with scenarios when a several dozen topics are created and 
deleted.
Examination of open descriptors with `lsof` showed that after stopping the test 
cluster (EmbeddedKafkaCluster), there are open files of deleted topics.
Please take a look at the PR #13173 with demo. (See [1]) 

My question:
Is this behavior expected for a test cluster?

The PR contains an ugly hotfix to the problem described. With no desire to 
merge as is. Just for demo. I guess the correct fix should be more accurate.

[1]. https://github.com/apache/kafka/pull/13173

--
With best regards,
Taras Ledkov

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