[FLINK-3946] State API Should Support Data Expiration

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.0.3
• Component/s: Runtime / State Backends
• Assignee: Unassigned
• Reporter: Elias Levy
• Created: 20/May/16 20:43
• Updated: 06/Mar/17 09:58
• Resolved: 06/Mar/17 09:58

Description

The state API should support data expiration. Consider a custom data stream operator that operates on a keyed stream and maintains a cache of items in its keyed state. The operator can expire items in the state based on event time or processing time. But as the state is keyed, if the operator is never invoked again for a previously observed key, the state associated with that key will never be expired, leading the overall job state to grow indefinitely.

Issue Links

• duplicates: FLINK-3089 State API Should Support Data Expiration (State TTL)