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https://issues.apache.org/jira/browse/HIVE-21215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17012650#comment-17012650
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Marta Kuczora commented on HIVE-21215:
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Hi [~zhxjdwh], no this issue is not solved yet. The Parquet update is blocked
by a recently found bug in ParquetFooterInputFromCache. (HIVE-22716). As soon
as I get that fix in, we can go forward with upgrading the Parquet version and
then with this patch.
> Read Parquet INT64 timestamp
> ----------------------------
>
> Key: HIVE-21215
> URL: https://issues.apache.org/jira/browse/HIVE-21215
> Project: Hive
> Issue Type: New Feature
> Reporter: Karen Coppage
> Assignee: Marta Kuczora
> Priority: Major
>
> [WIP]
> This patch enables Hive to start reading timestamps from Parquet written with
> the new semantics:
> With Parquet version 1.11, a new timestamp LogicalType with base INT64 and
> the following metadata is introduced:
> * boolean isAdjustedToUtc: marks whether the timestamp is converted to UTC
> (aka Instant semantics) or not (LocalDateTime semantics).
> * enum TimeUnit (NANOS, MICROS, MILLIS): granularity of timestamp
> Upon reading, the semantics of these new timestamps will be determined by
> their metadata, while the semantics of INT96 timestamps will continue to be
> deduced from the writer metadata.
> This feature will be behind a flag for now.
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