[
https://issues.apache.org/jira/browse/FLINK-4856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15642868#comment-15642868
]
Xiaogang Shi edited comment on FLINK-4856 at 11/7/16 2:29 AM:
--------------------------------------------------------------
I have started the implementation of MapStates. But at prior to that, I think
we need some modification to current implementation to clarify the concepts. I
have started two JIRA to state these problems. You may see FLINK-5023 and
FLINK-5024 for the details.
was (Author: xiaogang.shi):
I have started the implementation of MapStates. But at prior to that, I think
we need some modification to currently framework to clarify the concepts. I
have started two JIRA to state these problems. You may see FLINK-5023 and
FLINK-5024 for the details.
> 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
> Assignee: 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)
