Github user blrunner commented on the pull request:
https://github.com/apache/tajo/pull/626#issuecomment-127478487
I applied CatalogStore::addPartitions to DDLExecutor and implemented some
unit test cases.
When I implementing unit test cases, I found that drop partition operate on
different way than expected. I think that drop partition need to delete data of
table with `PURGE` option. But currently, when dropping partition on managed
table without `PURGE` option, all data had been deleted. So, I've fixed this
bug.
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