crl-release-24.3: sstable: fix improper buffer reuse in copyDataBlocks #4182
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Previously, in the colblk implementation of copyDataBlocks, we were reusing a buffer that could under some cases be passed directly to the write queue and would get written to sstable while later blocks are being read into the same buffer. This change also improves tests around CopySpan() to better test cache hit/miss cases. Fixes cockroachdb/cockroach#131332.
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jbowens
approved these changes
Nov 26, 2024
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TFTR! |
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Backport of #4181
Previously, in the colblk implementation of copyDataBlocks, we were reusing a buffer that could under some cases be passed directly to the write queue and would get written to sstable while later blocks are being read into the same buffer.
This change also improves tests around CopySpan() to better test cache hit/miss cases.
Fixes cockroachdb/cockroach#131332.