When multiple Linux users run test at the same time, flink-runtime module may fail. User A creates /tmp/cacheFile, and User B will have no permission to visit the fold.
FileCacheDeleteValidationTest.setup:79 Error initializing the test: /tmp/cacheFile (Permission denied)
Tests in error:
IOManagerTest.channelEnumerator:54 » Runtime Could not create storage director...
Tests run: 1385, Failures: 1, Errors: 1, Skipped: 8