[C++] Add row-based utilities for encoding a batch and merging row tables
- Dominant language
- C++
- Stars
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- 3d 13h
- Merged PRs (30d)
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Description
This PR adds a "row table" which is a high level API for a 2D structure that has row-major storage. It adds utilities to encode to & from the existing columnar structure via this high level API. Internally it uses RowTableImpl.
It also adds a merge utility that can merge two row tables together.
**Reporter**: [Weston Pace](https://issues.apache.org/jira/browse/ARROW-16637) / @westonpace
#### PRs and other links:
- [GitHub Pull Request #13220](https://github.com/apache/arrow/pull/13220)
**Note**: *This issue was originally created as [ARROW-16637](https://issues.apache.org/jira/browse/ARROW-16637). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*
Contributor guide
Research direction
Review linked pull request #13220 first, then trace RowTableImpl and the existing columnar structure. Confirm the row-table API covers encoding to and from the columnar structure and merging two row tables, using the PR as the completion reference.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- data-engineering
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 15/100