Avoid copying measurements when updating last cache #29969

Job	Run time
unit-test (17, windows-latest, others)	21m 30s
unit-test (17, windows-latest, datanode)	41m 15s
unit-test (17, ubuntu-latest, datanode)	29m 10s
unit-test (17, ubuntu-latest, others)	15m 24s
	1h 47m 19s

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