Improve pipe unit tests #30065

Job	Run time
unit-test (17, windows-latest, datanode)	35m 3s
unit-test (17, ubuntu-latest, datanode)	22m 31s
unit-test (17, ubuntu-latest, others)	20m 47s
unit-test (17, windows-latest, others)	23m 2s
	1h 41m 23s

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