[jira] [Commented] (FLINK-3085) Move State Backend Initialization from "registerInputOutput()" to "invoke()"

["Aljoscha Krettek (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-3085?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15029819#comment-15029819 ] 

Aljoscha Krettek commented on FLINK-3085:
-----------------------------------------

I also have some work in progress here: https://github.com/aljoscha/flink/commits/state-enhance. I'm changing it so that every operator has its own instance of the StateBackend, because the StateBackend is now also responsible for keeping track of the key-value states. Instead of them being scattered across RuntimeContext and AbstractStreamOperator.

> Move State Backend Initialization from "registerInputOutput()" to "invoke()"
> ----------------------------------------------------------------------------
>
>                 Key: FLINK-3085
>                 URL: https://issues.apache.org/jira/browse/FLINK-3085
>             Project: Flink
>          Issue Type: Improvement
>          Components: Streaming
>    Affects Versions: 0.10.0
>            Reporter: Stephan Ewen
>            Assignee: Stephan Ewen
>             Fix For: 1.0.0
>
>
> The state backend initialization currently happens in the {{StreamTask}} in {{registerInputOutput()}}. For better error handling, it should be part of {{invoke()}}, where the task is properly interrupted, threads are properly joined, and exceptions are treated aware of cancelling.



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