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https://issues.apache.org/jira/browse/PARQUET-2035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17332440#comment-17332440
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Gabor Szadovszky commented on PARQUET-2035:
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[~cas], thanks for reporting this issue.
I don't have any experience in java11 modules. Since parquet-mr is still
targeted to java8 and there are a couple of other projects use it without any
issue (probably not in a java11 modularized environment) I would not say this
is a bug. I would expect to have some workarounds for the java11 modularized
environments since it is working without modules.
Meanwhile, I am happy to help/review for any contribution to parquet-mr that
makes it work properly for java11 modules.
> Java module import error due to shaded package
> shaded.parquet.it.unimi.dsi.fastutil
> -----------------------------------------------------------------------------------
>
> Key: PARQUET-2035
> URL: https://issues.apache.org/jira/browse/PARQUET-2035
> Project: Parquet
> Issue Type: Bug
> Components: parquet-avro
> Affects Versions: 1.12.0, 1.11.1
> Reporter: Maxim Kolesnikov
> Priority: Major
> Attachments: parquet-example.zip
>
>
> *Description:*
> Due to collision of shaded packages
> {code:java}
> shaded.parquet.it.unimi.dsi.fastutil{code}
> in
> {code:java}
> org.apache.parquet:parquet-avro{code}
> and
> {code:java}
> org.apache.parquet:parquet-column{code}
> it is not possible to use both these dependencies within a modularized java
> project at the same time.
>
>
> *How to reproduce:*
> * create a maven project with dependency
> org.apache.parquet:parquet-avro:1.11.1
> * declare java module that requires both parquet.avro and parquet.column
> * run
> {code:java}
> mvn compile{code}
>
> *Expected behaviour:*
> Project should compile without errors.
>
> *Actual behaviour:*
> Project fails with compilation errors:
>
> {code:java}
> [ERROR] the unnamed module reads package shaded.parquet.it.unimi.dsi.fastutil
> from both parquet.column and parquet.avro
> ...{code}
>
>
> *Reproducible example* (same code as in the attached zip file):
> https://github.com/xCASx/parquet-example
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