perf: avoid cache during compaction #21431

Job	Run time
Check typos and docs	7s
Check License Header	2m 0s
Build GreptimeDB binaries (ubuntu-20.04)	2m 0s
Build GreptimeDB binary (profile-CI) (ubuntu-20.04)	2m 1s
Rustfmt	32s
Check (windows-2022)	1m 53s
Check (ubuntu-20.04)	2m 2s
Toml Check	28s
Clippy	2m 1s
coverage	1m 51s
Fuzz Test with Chaos (Distributed, ${{ matrix.mode.name }}, ${{ matrix.target }})	1s
Unstable Fuzz Test	1s
Fuzz Test (Distributed, ${{ matrix.mode.name }}, ${{ matrix.target }})	1s
Fuzz Test	1s
Sqlness Test (${{ matrix.mode.name }})	1s
	15m 0s

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