TestJdbcHugeStream takes too long

Running org.apache.nifi.processors.standard.util.TestJdbcHugeStream
Tests run: 2, Failures: 0, Errors: 0, Skipped: 1, Time elapsed: 45.891 sec - in org.apache.nifi.processors.standard.util.TestJdbcHugeStream

This has caused the build to be more than 30% longer than previously seen when on high-end machines with many cores. The length of the test doesn't seem to clearly add value to warrant it so best to make it lean and mean. Short build times are important.