fix(table cache) block cache logic for table with no compression #2022
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hugy718
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Problem
Fixes #2021.
The problem is in the
block()function in table.go.blk.datatakes a slice of the t.Data. If there is no decryption or decompression, it will hold this slice and added to the cache, which means it will always hold a reference of t.Data. That will also preventing GC of the mmap file buffer, so long as a block of it is in cache.Solution
Make a copy of the block data, when no decryption nor compression.