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https://issues.apache.org/jira/browse/ARROW-1816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16257279#comment-16257279
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Li Jin commented on ARROW-1816:
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I will look at cell level a bit closer, my hunch is branching can be avoided by
storing a timeUnit object in the vector:
https://github.com/apache/arrow/blob/master/java/vector/src/main/java/org/apache/arrow/vector/NullableTimeStampNanoVector.java#L116
timeZone doesn't seem to be used in cell level either, but I need to look
closer.
> [Java] Resolve new vector classes structure for timestamp, date and maybe
> interval
> ----------------------------------------------------------------------------------
>
> Key: ARROW-1816
> URL: https://issues.apache.org/jira/browse/ARROW-1816
> Project: Apache Arrow
> Issue Type: Sub-task
> Reporter: Li Jin
> Fix For: 0.8.0
>
>
> Personally I think having 8 vector classes for timestamps is not great. This
> is discussed at some point during the PR:
> https://github.com/apache/arrow/pull/1203#discussion_r145241388
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