[FLINK-1778] Improve normalized keys in composite key case

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Abandoned
• Affects Version/s: 0.9
• Component/s: Runtime / Task
• Assignee: Unassigned
• Reporter: Stephan Ewen
• Created: 24/Mar/15 15:20
• Updated: 17/Apr/21 12:28
• Resolved: 17/Apr/21 12:28

Description

Currently, if we have a key (String, long), the String will take up the entire normalized key space, without being fully discerning anyways. Limiting the key prefix in size and giving space to the second key field should in most cases improve the comparison efficiency.