CASSANDRA-21511: Fix page cache eviction for ranges larger than 2 GiB#4935
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Runtian wants to merge 1 commit into
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CASSANDRA-21511: Fix page cache eviction for ranges larger than 2 GiB#4935Runtian wants to merge 1 commit into
Runtian wants to merge 1 commit into
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NativeLibrary.trySkipCache splits ranges larger than Integer.MAX_VALUE before passing them to posix_fadvise, but incorrectly moved the offset backward after each chunk. Advance the offset so all chunks cover consecutive forward file ranges, and add deterministic unit coverage for large, boundary, nonzero-offset, and whole-file ranges.
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NativeLibrary.trySkipCache splits ranges larger than Integer.MAX_VALUE before passing them to posix_fadvise, but incorrectly moved the offset backward after each chunk, so page-cache eviction for ranges over 2 GiB targeted the wrong offsets. Advance the offset so all chunks cover consecutive forward file ranges, and add deterministic unit coverage for large, boundary, nonzero-offset, and whole-file ranges.
JIRA: https://issues.apache.org/jira/browse/CASSANDRA-21511