[ARROW-13388] [C++][Parquet] Add DELTA_LENGTH_BYTE_ARRAY

• Type: New Feature
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 4.0.1
• Fix Version/s: 9.0.0
• Component/s: C++, Parquet
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/29059
• Assignee: Muthunagappan
• Reporter: Jorge Leitão
• Created: 19/Jul/21 19:45
• Updated: 11/Jan/23 08:32
• Resolved: 28/Jun/22 03:35

Description

While trying to read a utf8 column with DELTA_LENGTH_BYTE_ARRAY encoding, pyarrow yields

`OSError: Not yet implemented: Unsupported encoding.`

It would be nice to have support for this encoding, since it lends itself really well to the arrow format, whereby values's encoding is equal to arrow's representation.

Issue Links

• duplicates: PARQUET-491 [C++] Incorporate DELTA_LENGTH_BYTE_ARRAY value encoder into library and add unit tests
• links to: GitHub Pull Request #13386
• links to: GitHub Pull Request #13530