justinli500 commented on code in PR #49855:
URL: https://github.com/apache/arrow/pull/49855#discussion_r3725727087
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cpp/src/parquet/file_reader.h:
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@@ -201,6 +201,12 @@ class PARQUET_EXPORT ParquetFileReader {
const ::arrow::io::IOContext& ctx,
const ::arrow::io::CacheOptions& options);
+ /// \brief Release cached bytes (from PreBuffer()) ending at or before
+ /// `end_offset`. Call once those row groups are decoded; later reads of
evicted
+ /// ranges fall back to the source file. No-op (returns 0) if PreBuffer()
was not
+ /// called.
+ int64_t EvictPreBufferedDataBefore(int64_t end_offset);
Review Comment:
Good point - I changed this to `void` and updated the tests.
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