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https://issues.apache.org/jira/browse/SPARK-29448?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maxim Gekk resolved SPARK-29448.
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Resolution: Won't Fix
> Support the `INTERVAL` type by Parquet datasource
> -------------------------------------------------
>
> Key: SPARK-29448
> URL: https://issues.apache.org/jira/browse/SPARK-29448
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 2.4.4
> Reporter: Maxim Gekk
> Priority: Major
>
> Parquet format allows to store intervals as triple of (milliseconds, days,
> months) see
> https://github.com/apache/parquet-format/blob/master/LogicalTypes.md#interval
> . The `INTERVAL` logical type is used for an interval of time. _It must
> annotate a fixed_len_byte_array of length 12. This array stores three
> little-endian unsigned integers that represent durations at different
> granularities of time. The first stores a number in months, the second stores
> a number in days, and the third stores a number in milliseconds. This
> representation is independent of any particular timezone or date._
> Need to support writing and reading values of Catalyst's CalendarIntervalType.
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