[SPARK-5404] Statistic of Logical Plan is too aggresive

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.4.0
• Component/s: SQL
• Assignee: Cheng Hao
• Reporter: Cheng Hao
• Created: 26/Jan/15 05:43
• Updated: 25/Apr/15 21:57
• Resolved: 18/Mar/15 02:33

Description

The statistic number of a logical plan is quite helpful while do optimization like join reordering, however, the default algorithm is too aggressive, which probably lead to a totally wrong join order.

Issue Links

• links to: [Github] Pull Request #4199 (chenghao-intel)
• links to: [Github] Pull Request #4914 (chenghao-intel)