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https://issues.apache.org/jira/browse/HIVE-22405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16980817#comment-16980817
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Jesus Camacho Rodriguez commented on HIVE-22405:
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Pushed to master, thanks [~abstractdog].
> Add ColumnVector support for ProlepticCalendar
> ----------------------------------------------
>
> Key: HIVE-22405
> URL: https://issues.apache.org/jira/browse/HIVE-22405
> Project: Hive
> Issue Type: Bug
> Components: storage-api
> Reporter: Owen O'Malley
> Assignee: László Bodor
> Priority: Major
> Fix For: 4.0.0
>
> Attachments: HIVE-22405.01.patch, HIVE-22405.02.patch,
> HIVE-22405.04.patch
>
>
> Hive recently moved its processing to the proleptic calendar, which has
> created some issues for users who have dates before 1580 AD.
> I'd propose extending the column vectors for times & dates to encode which
> calendar they are using.
> * create DateColumnVector that extends LongColumnVector
> * add a method to change calendars to both DateColumnVector and
> TimestampColumnVector.
> {code}
> /**
> * Change the calendar to or from proleptic. If the new and old values of
> the flag are the
> * same, nothing is done.
> * useProleptic - set the flag for the proleptic calendar
> * updateData - change the data to match the new value of the flag.
> */
> void changeCalendar(useProleptic: boolean, updateData: boolean);
> /**
> * Detect whether this data is using the proleptic calendar.
> */
> boolean usingProlepticCalendar();
> {code}
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