[Java] Experiment with performance difference of avoiding the use of Avro Decoder
- 主要語言
- Java
- 星號
- 94
- 分支
- 152
- 平均合併
- 3 天 16 小時
- 30 天內合併 PR
- 11
描述
It has been posited that the Decoder object (and on-heap work in general) is potentially slow for decoding.
The scope of this Jira is to add a new method that instead of consuming from Decoder, consumes directly from a ByteBuffer. In order to this we there needs to be utility classes for zig-zag decoding (one might existing in avro) from a ByteBuffer.
This is esentially rewriting logic in the decoder to work directly against a bytebuffer and then measure if there is a meaningful performance impact.
**Reporter**: [Micah Kornfield](https://issues.apache.org/jira/browse/ARROW-6593) / @emkornfield
#### Related issues:
- [[Java] Add support for skipping decoding of columns/field in Avro converter](https://github.com/apache/arrow/issues/22949) (is a clone of)
**Note**: *This issue was originally created as [ARROW-6593](https://issues.apache.org/jira/browse/ARROW-6593). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*
貢獻指南
研究方向
首先定位使用 Decoder 的 Java Avro 轉換程式碼,並檢查現有的 Avro zig-zag 解碼工具。完成以 ByteBuffer 為基礎的解碼及其工具支援的實作,並透過測量結果確認避免使用 Decoder 和堆積上的處理是否能帶來有意義的效能影響後,這項工作才算完成。
由索引模型根據 Issue 內容生成。
評估
- 技術堆疊
- java
- 領域
- data
- Issue 類型
- 功能
- 難度
- 5/5
- 預估耗時
- 一週以上
- 活躍度
- 停滯
- 描述清晰度
- 基本清楚
- 新手友好度
- 25/100