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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-5892) Recover job state at the granularity of operator
Date Fri, 28 Apr 2017 12:34:04 GMT

    [ https://issues.apache.org/jira/browse/FLINK-5892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15988742#comment-15988742
] 

ASF GitHub Bot commented on FLINK-5892:
---------------------------------------

Github user StefanRRichter commented on a diff in the pull request:

    https://github.com/apache/flink/pull/3770#discussion_r113919931
  
    --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/jobgraph/JobVertex.java
---
    @@ -125,6 +132,8 @@ public JobVertex(String name) {
     	public JobVertex(String name, JobVertexID id) {
     		this.name = name == null ? DEFAULT_NAME : name;
     		this.id = id == null ? new JobVertexID() : id;
    +		this.operatorIDs.add(new OperatorID(this.id.getLowerPart(), this.id.getUpperPart()));
    +		this.operatorIdsAlternatives.add(null);
    --- End diff --
    
    Yes, that is what I also expected. Just wanted to be really sure.


> Recover job state at the granularity of operator
> ------------------------------------------------
>
>                 Key: FLINK-5892
>                 URL: https://issues.apache.org/jira/browse/FLINK-5892
>             Project: Flink
>          Issue Type: New Feature
>          Components: State Backends, Checkpointing
>            Reporter: Guowei Ma
>            Assignee: Guowei Ma
>
> JobGraph has no `Operator` info so `ExecutionGraph` can only recovery at the granularity
of task.
> This leads to the result that the operator of the job may not recover the state from
a save point even if the save point has the state of operator. 
>  https://docs.google.com/document/d/19suTRF0nh7pRgeMnIEIdJ2Fq-CcNVt5_hR3cAoICf7Q/edit#.



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