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https://issues.apache.org/jira/browse/ARROW-15174?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17496199#comment-17496199
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Antoine Pitrou commented on ARROW-15174:
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I took a look at the dataset and ORC JNI bridges. I don't think it makes sense
to consolidate them without also moving them to the C data interface, as that
would remove much of the custom code.
> [Java] Consolidate JNI compilation
> ----------------------------------
>
> Key: ARROW-15174
> URL: https://issues.apache.org/jira/browse/ARROW-15174
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Java
> Reporter: Alessandro Molina
> Assignee: David Dali Susanibar Arce
> Priority: Major
> Fix For: 8.0.0
>
>
> *Umbrella ticket for consolidating Java JNI compilation initiative*
> Seems we have spread the JNI code across the {{cpp}} and {{java}}
> directories. As for other bindings (Python) we already discussed it would be
> great to consolidate and move all cpp code related to PYthon into PyArrow, we
> should do something equivalent for Java too and move all C++ code specific to
> Java into the Java project.
> At the moment there are two JNI related directories:
> * [https://github.com/apache/arrow/tree/master/java/c]
> * [https://github.com/apache/arrow/tree/master/cpp/src/jni]
> Let's also research what's the best method to build those. The {{java/c}}
> directory seems to be already integrated with the Java build process, let's
> check if that approach is something we can reuse for the {{dataset}}
> directory too
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