[ARROW-7491] [Java] Improve the performance of aligning

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.17.0
• Component/s: Java
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/23756
• Assignee: Liya Fan
• Reporter: Liya Fan
• Created: 02/Jan/20 07:42
• Updated: 11/Jan/23 07:54
• Resolved: 21/Feb/20 13:18

Description

Aligning is an important and frequent operation when writing IPC data. It writes no more than 7 0 bytes to the output.
The current implementation creates a new byte array each time, leading to performance overhead, and increases the GC pressure.

We improve it by means of a shared byte array. Benchmark evaluation shows a 11% performance gain.

Issue Links

• links to: GitHub Pull Request #6120