[HIVE-10142] Calculating formula based on difference between each row's value and current row's in Windowing function

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.0.0
• Component/s: PTF-Windowing
• Assignee: Aihua Xu
• Reporter: Yi Zhang
• Created: 30/Mar/15 16:44
• Updated: 30/Jul/16 19:23

Description

For analytics with windowing function, the calculation formula sometimes needs to perform over each row's value against current tow's value. The decay value is a good example, such as sums of value with a decay function based on difference of timestamp between each row and current row.