[ARROW-1363] [C++] IPC writer sends buffer layout for dictionary rather than indices

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.6.0
• Fix Version/s: 0.7.0
• Component/s: C++
• External issue URL: https://github.com/apache/arrow/issues/17393
• Assignee: Wes McKinney
• Reporter: Wes McKinney
• Created: 16/Aug/17 19:42
• Updated: 11/Jan/23 07:14
• Resolved: 29/Aug/17 08:17

Description

This is because of:

https://github.com/apache/arrow/blob/master/cpp/src/arrow/ipc/metadata.cc#L321

Since the buffer structure of record batches contains only indices, this should be the buffer layout in the IPC metadata.

We should double check that Java is doing the right thing (I believe it is)

cc paul.e.taylor lmeyerov

Issue Links

• relates to: ARROW-1362 [Integration] Validate vector type layout in IPC messages