apache / apache/arrow-java

[Java] ORC JNI bridge should use the C data interface

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Langage dominant
Java
Étoiles
94
Forks
152
Merge moyen
3 j 16 h
PR mergées (30 j)
11

Description

Right now the ORC JNI bridge uses some custom buffer passing which only seems to handle primitive arrays correctly (child array buffers and dictionaries are not considered):
https://github.com/apache/arrow/blob/master/cpp/src/jni/orc/jni_wrapper.cpp#L263-L265

Instead, it should use the C data interface, which is now implemented in Java.

**Reporter**: [Antoine Pitrou](https://issues.apache.org/jira/browse/ARROW-15754) / @pitrou

**Note**: *This issue was originally created as [ARROW-15754](https://issues.apache.org/jira/browse/ARROW-15754). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*

Guide de contribution

Ouvrir le guide de contribution

Piste de recherche

Start with cpp/src/jni/orc/jni_wrapper.cpp around lines 263-265 and review the Java C data interface implementation. Trace how the ORC JNI bridge currently passes buffers, then verify that the interface covers child array buffers and dictionaries. Done means the bridge uses the C data interface for those cases.

Rédigé par le modèle d'indexation à partir du texte de l'issue.

Évaluation

Stack technique
c, cpp, java
Domaine
data-engineering
Type d'issue
Refactorisation
Difficulté
4/5
Temps estimé
3-5 jours
Activité
À l'abandon
Clarté
Plutôt claire
Accessibilité débutants
35/100

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