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Posted to dev@parquet.apache.org by "David Li (Jira)" <ji...@apache.org> on 2020/03/18 18:37:00 UTC

[jira] [Created] (PARQUET-1820) [C++] Use a column filter hint to inform read prefetching

David Li created PARQUET-1820:
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             Summary: [C++] Use a column filter hint to inform read prefetching
                 Key: PARQUET-1820
                 URL: https://issues.apache.org/jira/browse/PARQUET-1820
             Project: Parquet
          Issue Type: Improvement
          Components: parquet-cpp
            Reporter: David Li


As a follow up to PARQUET-1698 and ARROW-7995, we should use the I/O coalescing facility (where available and enabled), in combination with a column filter hint, to compute and prefetch the exact byte ranges we will be reading (using the metadata). This should further improve performance on remote object stores like Amazon S3. 



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