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TAJO-1952: Implement PartitionFileFragment
See https://issues.apache.org/jira/browse/TAJO-1952 and https://github.com/apache/tajo/pull/846. I recreated a pull request because of a branch deletion mistake.
Not ready to review. After recent rebase, some unit tests fail. I'm trying to fix it.
At first, I approached to make another fragment for partitioned table. But now, the only difference between FileFragment
and PartitionFileFragment
is the partition key. So, I would prefer to add the variable to FileFragment
instead of making PartitionFileFragment
. It will decrease unnecessary modifications and will avoid side effects by PartitionFileFragment
. Here are codes by above approach. https://github.com/apache/tajo/compare/master...blrunner:TAJO-1952-2?expand=1.