[APEXMALHAR-2359] Optimise fire trigger to avoid go through all data

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.7.0
• Assignee: Bright Chen
• Reporter: Bright Chen
• Created: 29/Nov/16 19:54
• Updated: 01/Apr/17 05:51
• Resolved: 18/Jan/17 18:47

Description

KeyedWindowedOperatorImpl.fireNormalTrigger(Window, boolean) currently go through each window and key to check value. The data collection could be very huge as the discard period could be relative long time. If fireOnlyUpdatedPanes is false probably there don't have much space to improve. But if fireOnlyUpdatedPanes is true, we don't have to go through the whole data collection. We only need to go through the window and key which handle after last trigger.

Issue Links

• links to: GitHub Pull Request #518