Github user dongjoon-hyun commented on the pull request:
https://github.com/apache/tajo/pull/434#issuecomment-84625233
You're right, but when I can construct prefix from the subset of partition
column, this patch handle that as a simple query.
/table_name/year=x/day=y/hour=z (full path is simple query)
/table_name/year=x/day=y (prefix path is constructed, so
simple query)
/table_name/ /day=y/hour=z (year is unknown, this is not simple
query. It will be handled in an old fashion)
/table_name/year=x/ /hour=z (day is unknown, this is not simple
query, too.)
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