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https://issues.apache.org/jira/browse/HIVE-20980?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16740823#comment-16740823
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Jesus Camacho Rodriguez commented on HIVE-20980:
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Apparently there is a UTC parameter for the timestamp type already in Parquet:
https://github.com/apache/parquet-format/blob/master/LogicalTypes.md#timestamp
That should make things much easier.
> Reinstate Parquet timestamp conversion between HS2 time zone and UTC
> --------------------------------------------------------------------
>
> Key: HIVE-20980
> URL: https://issues.apache.org/jira/browse/HIVE-20980
> Project: Hive
> Issue Type: Sub-task
> Components: File Formats
> Reporter: Karen Coppage
> Assignee: Karen Coppage
> Priority: Major
> Attachments: HIVE-20980.1.patch, HIVE-20980.2.patch,
> HIVE-20980.2.patch
>
>
> With HIVE-20007, Parquet timestamps became timezone-agnostic. This means that
> timestamps written after the change are read exactly as they were written;
> but timestamps stored before this change are effectively converted from the
> writing HS2 server time zone to GMT time zone. This patch reinstates the
> original behavior: timestamps are converted to UTC before write and from UTC
> before read.
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