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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/04/08 18:41:59 UTC

[GitHub] [arrow-datafusion] alamb commented on a diff in pull request #1990: Make it possible to only scan part of a parquet file in a partition

alamb commented on code in PR #1990:
URL: https://github.com/apache/arrow-datafusion/pull/1990#discussion_r846389838


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datafusion/core/src/datasource/listing/mod.rs:
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@@ -32,15 +32,26 @@ pub use table::{ListingOptions, ListingTable, ListingTableConfig};
 pub type PartitionedFileStream =
     Pin<Box<dyn Stream<Item = Result<PartitionedFile>> + Send + Sync + 'static>>;
 
+/// File part identified by [start, end) positions.

Review Comment:
   Are these positions measured in `bytes` from the start of the file?



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