[JAVA][C++]Support Parquet Read and Write in Java
- Lenguaje dominante
- Java
- Estrellas
- 94
- Forks
- 152
- Merge medio
- 3 d 16 h
- PR fusionados (30 d)
- 11
Descripción
We added a new java interface to support parquet read and write from hdfs or local file.
The purpose of this implementation is that when we loading and dumping parquet data in Java, we can only use rowBased put and get methods. Since arrow already has C++ implementation to load and dump parquet, so we wrapped those codes as Java APIs.
After test, we noticed in our workload, performance improved more than 2x comparing with rowBased load and dump. So we want to contribute codes to arrow.
since this is a total independent change, there is no codes change to current arrow codes. We added two folders as listed: java/adapter/parquet and cpp/src/jni/parquet
**Reporter**: [Chendi.Xue](https://issues.apache.org/jira/browse/ARROW-6720)
#### Related issues:
- [[Java][Dataset] Implement Datasets Java API ](https://github.com/apache/arrow/issues/17055) (incorporates)
- [[Java][Dataset] Support writing to files within dataset scanner via JNI](https://github.com/apache/arrow/issues/27628) (incorporates)
#### PRs and other links:
- [GitHub Pull Request apache/arrow#5522](https://github.com/apache/arrow/pull/5522)
- [GitHub Pull Request apache/arrow#5717](https://github.com/apache/arrow/pull/5717)
- [GitHub Pull Request apache/arrow#5719](https://github.com/apache/arrow/pull/5719)
**Note**: *This issue was originally created as [ARROW-6720](https://issues.apache.org/jira/browse/ARROW-6720). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*
Guía de contribución
Línea de trabajo
Comienza revisando java/adapter/parquet y cpp/src/jni/parquet; después, compara los pull requests enlazados #5522, #5717 y #5719 con las incidencias relacionadas con los datasets. Comprueba las APIs de Java para la lectura y escritura de Parquet en HDFS y en archivos locales, así como sus pruebas; se considera terminado cuando la compatibilidad requerida está presente sin duplicar el trabajo de datasets ya incorporado.
Escrito por el modelo de indexación a partir del texto del issue.
Evaluación
- Stack tecnológico
- cpp, java
- Área
- backend, data
- Tipo de issue
- Nueva funcionalidad
- Dificultad
- 4/5
- Tiempo estimado
- 3-5 días
- Estado de actividad
- Estancado
- Claridad
- Bastante claro
- Aptitud para principiantes
- 20/100