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Posted to dev@parquet.apache.org by "Uwe L. Korn (JIRA)" <ji...@apache.org> on 2018/08/19 13:04:00 UTC
[jira] [Created] (PARQUET-1392) [C++] Supply row group indices to
parquet::arrow::FileReader::ReadTable
Uwe L. Korn created PARQUET-1392:
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Summary: [C++] Supply row group indices to parquet::arrow::FileReader::ReadTable
Key: PARQUET-1392
URL: https://issues.apache.org/jira/browse/PARQUET-1392
Project: Parquet
Issue Type: New Feature
Components: parquet-cpp
Reporter: Uwe L. Korn
Assignee: Uwe L. Korn
Fix For: cpp-1.5.0
By looking at the Parquet statistics, a user can already determine with its own logic which RowGroups are interesting for him. Currently we only provide functions to read the whole file or individual RowGroups. By supplying {{parquet::arrow}} with the RowGroups at once, it can better optimize its memory allocations as well as make better use of the underlying thread pool.
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