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https://issues.apache.org/jira/browse/PARQUET-113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14301047#comment-14301047
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Philippe Girolami commented on PARQUET-113:
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[~rdblue] We've been hit with these issues using parquet-ptoo. We'd like to
know whether changing our "raw" protobuf data model to fit the 2 or 3 level
structure for arrays is a good idea : we're afraid once PARQUET-113 gets
implemented in parquet-protobuf then we will end up with a 4 or 6 level
structure. Any thoughts on this ?
> Clarify parquet-format specification for LIST and MAP structures.
> -----------------------------------------------------------------
>
> Key: PARQUET-113
> URL: https://issues.apache.org/jira/browse/PARQUET-113
> Project: Parquet
> Issue Type: Bug
> Components: parquet-format, parquet-mr
> Reporter: Ryan Blue
> Assignee: Ryan Blue
>
> There are incompatibilities in the way that some parquet object models
> translate nested structures annotated by LIST and MAP / MAP_KEY_VALUE. We
> need to define clearly what the structures should look like and how to
> interpret existing structures, including what must be supported to read
> current parquet-avro, parquet-thrift, etc. files.
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