feat: read column and region info from state cache #3222
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Signed-off-by: Ruihang Xia <waynestxia@gmail.com>
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Jan 23, 2024
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What's changed and what's your intention?
Closes #3220
Change the metadata retrieving behavior from read underlying mito to memory state cache. This can alleviate the high CPU usage a lot.
CPU curve afterward:
(There are three flush in this graph)
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Closes #3220