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I am learning mysql buffer pool.

I know that buffer pools have lru list and unzip lru list in the InnoDB storage engine.

I don't know why InnoDB buffer pool use the unzip lru list.

Why use unzip lru list and when?

haedoang
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1 Answers1

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To operate and search on data the page has to be uncompressed. The notion of compressed started with ROW_FORMAT=COMPRESSED tables. When ordinary pages are uncompress too they use use the same list.

danblack
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