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Manoj KarthickAndrew Lamb
9992f675c8f
Manoj Karthick authored and Andrew Lamb committed ac18524c74a
ARROW-11479: [Rust] [Parquet] Add Method to get compressed size of columns from row group metadata

Add method `compressed_size()` to get compressed column data size in a row group. The JVM [parquet-mr](https://github.com/apache/parquet-mr) library provides a method to get the same [here](https://github.com/apache/parquet-mr/blob/0a4e3eea991f7588c9c5e056e9d7b32a76eed5da/parquet-hadoop/src/main/java/org/apache/parquet/hadoop/metadata/BlockMetaData.java#L114) . This would help in calculating the total compressed size alongside the uncompressed size of the Parquet file.

Closes #9401 from manojkarthick/rust-compressed-size

Authored-by: Manoj Karthick <manojkarthick@ymail.com>
Signed-off-by: Andrew Lamb <andrew@nerdnetworks.org>