[jira] [Commented] (REEF-1765) Building a Parquet Reader for Potential Integrations with Other ML Frameworks

["Markus Weimer (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/REEF-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15955706#comment-15955706 ] 

Markus Weimer commented on REEF-1765:
-------------------------------------

From the draft PR, it looks like this adds the new Java code to the {{reef-io}} package, right? That is problematic, as it also needs to add another dependency to that package (parquet). Would it be feasible to move this code into its own sub-module?

> Building a Parquet Reader for Potential Integrations with Other ML Frameworks
> -----------------------------------------------------------------------------
>
>                 Key: REEF-1765
>                 URL: https://issues.apache.org/jira/browse/REEF-1765
>             Project: REEF
>          Issue Type: New Feature
>          Components: REEF.NET IO
>    Affects Versions: 0.16
>            Reporter: Shouheng Yi
>            Priority: Minor
>              Labels: features
>   Original Estimate: 336h
>  Remaining Estimate: 336h
>
> Parquet file format is very common in some well-known frameworks like Hadoop and Spark. By enabling REEF to read parquet file, we could potentially integrate with those frameworks. Currently we want to only support data of non-nested types with a table-like property. This allows us to transform the data into formats like RDDs, etc.
> A draft of ParquetReader is provided here in a PR: https://github.com/apache/reef/pull/1283



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