[jira] [Comment Edited] (FLINK-10578) Support writable state in QueryableStateClient

["Kostas Kloudas (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-10578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16653158#comment-16653158 ] 

Kostas Kloudas edited comment on FLINK-10578 at 10/17/18 8:03 AM:
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Hi [~wind_ljy],

What do you mean by writable state?

If you mean that you can modify a job's state from outside the job itself, 
then my personal opinion is that this feature should not be added to Flink.
The reason is that this will introduce consistency issues and problems with 
checkpointing that can potentially (although I am not  sure) be resolved 
with further synchronization which, in turn, will affect Flink's performance.

In addition, this will hinder other efforts that the community is discussing 
about, such as state replication.

Please update the description on the JIRA and also the component that it affects
so that everyone can understand what the JIRA stands for.


was (Author: kkl0u):
Hi [~wind_ljy],

What do you mean by writable state?

If you mean that you can modify a job's state from outside the job itself, 
then my personal opinion is that this feature should not be added to Flink.

Please update the description on the JIRA and also the component that it affects
so that everyone can understand what the JIRA stands for.

> Support writable state in QueryableStateClient
> ----------------------------------------------
>
>                 Key: FLINK-10578
>                 URL: https://issues.apache.org/jira/browse/FLINK-10578
>             Project: Flink
>          Issue Type: New Feature
>            Reporter: Jiayi Liao
>            Assignee: Jiayi Liao
>            Priority: Major
>




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