[TAJO-2101] Support add multiple partitions in a single ALTER TABLE statement

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Catalog, Planner/Optimizer
• Assignee: JaeHwa Jung
• Reporter: JaeHwa Jung
• Created: 18/Mar/16 08:08
• Updated: 18/Mar/16 08:09

Description

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:

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';

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:

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

Issue Links

• depends upon: TAJO-1891 Allow arbitrary partition path
• depends upon: TAJO-1952 Implement PartitionFileFragment