[TAJO-1722] Even distribution of intermediate data for join queries

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Fix Version/s: 0.13.0
• Component/s: distributed query plan
• Assignee: Jihoon Son
• Reporter: Jihoon Son
• Created: 30/Jul/15 02:42
• Updated: 02/Dec/17 17:33

Description

Data skew is one of the most important problems which affects to the query performance in distributed systems. To do handle this problem, we have used an algorithm for evenly distributing intermediate data for aggregation.
This ticket is to apply our algorithm for join queries, too.