Github user eminency commented on the pull request:
https://github.com/apache/tajo/pull/579#issuecomment-120780389
Hi, @blrunner
1. Presto-orc is tested and stable. And it is a bit more faster than Hive.
Secondly, Hive processes ORC with row-oriented, but Presto does with
column-oriented. Because ORC is columnar format, Presto's way may be more
suitable. Though Tajo processes it with tuple-oriented, it can be helpful when
Tajo will change to use offheap in the future.
2. Sure.
Anyway, **please hold the review**. About new storage manager code, I'm
modifying.
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