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https://issues.apache.org/jira/browse/HIVE-19723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16494562#comment-16494562
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Matt McCline commented on HIVE-19723:
-------------------------------------
Other than copying some of the random timestamp test logic in
TestTimestampWritable that exercises things more, your change +1 LGTM tests
pending.
> Arrow serde: "Unsupported data type: Timestamp(NANOSECOND, null)"
> -----------------------------------------------------------------
>
> Key: HIVE-19723
> URL: https://issues.apache.org/jira/browse/HIVE-19723
> Project: Hive
> Issue Type: Bug
> Reporter: Teddy Choi
> Assignee: Teddy Choi
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-19723.1.patch
>
>
> Spark's Arrow support only provides Timestamp at MICROSECOND granularity.
> Spark 2.3.0 won't accept NANOSECOND. Switch it back to MICROSECOND.
> The unit test org.apache.hive.jdbc.TestJdbcWithMiniLlapArrow will just need
> to change the assertion to test microsecond. And we'll need to add this to
> documentation on supported datatypes.
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