Pipe: improve incremental memory estimation #30068

Job	Run time
unit-test (17, windows-latest, datanode)	33m 27s
unit-test (17, ubuntu-latest, datanode)	25m 0s
unit-test (17, windows-latest, others)	31m 2s
unit-test (17, ubuntu-latest, others)	21m 29s
	1h 50m 58s

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