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https://issues.apache.org/jira/browse/TAJO-1925?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15095552#comment-15095552
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ASF GitHub Bot commented on TAJO-1925:
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Github user blrunner commented on the pull request:
https://github.com/apache/tajo/pull/853#issuecomment-171153500
Rebased. Basically, Tajo column partition focus on Hive partition
compatibility. Currently, Hive just created timestamp partition directories
using date format. I think that Tajo just need to follow current Hive version
rule. Because even if we implement long value time for timestamp partition
directory, Hive can't handle it.
> Improve hive compatibility with TIMESTAMP partition column.
> -----------------------------------------------------------
>
> Key: TAJO-1925
> URL: https://issues.apache.org/jira/browse/TAJO-1925
> Project: Tajo
> Issue Type: Improvement
> Components: Catalog, Physical Operator
> Affects Versions: 0.11.0, 0.12.0
> Reporter: Jaehwa Jung
> Assignee: Jaehwa Jung
> Fix For: 0.12.0
>
> Attachments: TAJO-1925.patch, TAJO-1925_2.patch, TAJO-1925_3.patch
>
>
> -Currently, Tajo allow to use TIMESTAMP column as a partition key. But if
> users use TIMESTAMP partition column, Tajo doesn't keep the original
> TIMESTAMP values. Actually, Tajo automatically converts TIMESTAMP values to
> STRING literals which are accepted in the format YYYY-MM-DD HH:MM:SS. As a
> result, Tajo can't keep mills of second and can't provide right hive
> compatibility-
> We need to support hive compatibility for all partition column types. But
> when using TIMESTAMP partition column, users might not get correct partitions
> occasionally because tajo partition name is different from hive partition
> name. Actually, Tajo automatically converts TIMESTAMP values to STRING
> literals which are accepted in the format YYYY-MM-DD HH:MM:SS. But Hive
> automatically converts it to STRING literals which are accepted in the format
> YYYY-MM-DD HH:MM:SS.MS.
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