[jira] [Created] (NIFI-3804) Resolve "too many files open" issues in tests when running full build multiple times

["Andy LoPresto (JIRA)" <ji...@apache.org>]

Andy LoPresto created NIFI-3804:
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             Summary: Resolve "too many files open" issues in tests when running full build multiple times
                 Key: NIFI-3804
                 URL: https://issues.apache.org/jira/browse/NIFI-3804
             Project: Apache NiFi
          Issue Type: Bug
          Components: Tools and Build
    Affects Versions: 1.2.0
            Reporter: Andy LoPresto


When running the full build multiple times, tests can fail due to "too many files open" errors. These tests run successfully when the system is rebooted. I have followed configuration best practices (raising max file handles to 50_000) but after repeated test runs, this threshold is maxed out. This leads me to believe there are tests which do not clean up after themselves or temporary files which are not closed and deleted. 

I suggest using malware detection and analysis tools/VMs to perform a file system snapshot before and after a complete test run and compare to determine what is left open. 



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