Xiaogang Shi created FLINK-4856: ----------------------------------- Summary: Add MapState for keyed streams Key: FLINK-4856 URL: https://issues.apache.org/jira/browse/FLINK-4856 Project: Flink Issue Type: New Feature Components: State Backends, Checkpointing Reporter: Xiaogang Shi
Many states in keyed streams are organized as key-value pairs. Currently, these states are implemented by storing the entire map into a ValueState or a ListState. The implementation however is very costly because all entries have to be serialized/deserialized when updating a single entry. To improve the efficiency of these states, MapStates are urgently needed. -- This message was sent by Atlassian JIRA (v6.3.4#6332)