[jira] [Commented] (FLINK-4256) Fine-grained recovery

["Eron Wright (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-4256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16165537#comment-16165537 ] 

Eron Wright  commented on FLINK-4256:
-------------------------------------

Is the scope of FLINK-4256 covering batch jobs only?   There are various TODOs related to the interplay between local failover and checkpointing, for example.   Wondering whether additional subtasks should be opened here or elsewhere.

> Fine-grained recovery
> ---------------------
>
>                 Key: FLINK-4256
>                 URL: https://issues.apache.org/jira/browse/FLINK-4256
>             Project: Flink
>          Issue Type: Improvement
>          Components: JobManager
>    Affects Versions: 1.1.0
>            Reporter: Stephan Ewen
>            Assignee: Stephan Ewen
>
> When a task fails during execution, Flink currently resets the entire execution graph and triggers complete re-execution from the last completed checkpoint. This is more expensive than just re-executing the failed tasks.
> In many cases, more fine-grained recovery is possible.
> The full description and design is in the corresponding FLIP.
> https://cwiki.apache.org/confluence/display/FLINK/FLIP-1+%3A+Fine+Grained+Recovery+from+Task+Failures
> The detail desgin for version1 is https://docs.google.com/document/d/1_PqPLA1TJgjlqz8fqnVE3YSisYBDdFsrRX_URgRSj74/edit#



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