[jira] [Created] (TAJO-2101) Support add multiple partitions in a single ALTER TABLE statement

["Jaehwa Jung (JIRA)" <ji...@apache.org>]

Jaehwa Jung created TAJO-2101:
---------------------------------

             Summary: Support add multiple partitions in a single ALTER TABLE statement
                 Key: TAJO-2101
                 URL: https://issues.apache.org/jira/browse/TAJO-2101
             Project: Tajo
          Issue Type: Sub-task
          Components: Catalog, Planner/Optimizer
            Reporter: Jaehwa Jung
            Assignee: Jaehwa Jung


If TAJO-1891 commit, users can add partition to table using {{ALTER TABLE}} statement. But if users want to add many partitions, they should use following form:

{code:xml}
ALTER TABLE table_name ADD PARTITION (partCol = 'value1') location 'location1';
ALTER TABLE table_name ADD PARTITION (partCol = 'value2') location 'location2';
...
ALTER TABLE table_name ADD PARTITION (partCol = 'valueN') location 'locationN';
{code}

In general case, above approach doesn't matter. But if there are lots of partitions, for example, more than hundreds of partitions, it may raise loss of catalog because single statement calls single call of catalog api. Also users may feel inconvenience for using sing statement. We need to allow following form:

{code:xml}
ALTER TABLE page_view ADD PARTITION (dt='2016-03-01', country='kr') location 'location1'
  PARTITION (dt='2016-03-02', country='kr') location 'location2';
{code}



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