Github user blrunner commented on the pull request:
https://github.com/apache/tajo/pull/630#issuecomment-126214851
I added some columns and index to ``PARTITION_KEYS`` table for getting
partitions efficiently and tested on macbook successfully. The batch response
time results are listed below.
* 3,000 records: 1 ~ 2 sec
* 30,000 records: 6 ~ 8 sec
* 300,000 records: 60 ~ 70 sec
Honestly, I was worried about removing foreign key of ``PARTITION_KEYS``
table because it affected to batch insert performance. But it would be good to
leave it on the table because of data integrity.
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