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https://issues.apache.org/jira/browse/ARROW-11803?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Neville Dipale resolved ARROW-11803.
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Fix Version/s: 4.0.0
Resolution: Fixed
Issue resolved by pull request 9592
[https://github.com/apache/arrow/pull/9592]
> [Rust] [Parquet] Support v2 LogicalType
> ---------------------------------------
>
> Key: ARROW-11803
> URL: https://issues.apache.org/jira/browse/ARROW-11803
> Project: Apache Arrow
> Issue Type: Sub-task
> Reporter: Neville Dipale
> Assignee: Neville Dipale
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 4h
> Remaining Estimate: 0h
>
> We currently do not read nor write the version 2 logical types. This is
> mainly because we do not have a mapping for it from parquet-format-rs.
> To implement this, we can:
> - convert "parquet::basic::LogicalType" to "parquet::basic::ConvertedType"
> - implement "parquet::basic::LogicalType" which mirrors
> "parquet_format::LogicalType"
> - create a mapping between ConvertedType and LogicalType
> - write LogicalType to "parquet_format::SchemaElement" if v2 of the writer is
> used
> This would be a good starting point for implementing 2.6 types (UUID, NANOS
> precision time & timestamp).
> Follow-up work would be:
> - parsing v2 of the schema [ARROW-11365]
> - Using v2 in the Arrow writer (mostly schema conversion)
> - Supporting nanosecond precision time & timestamp
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