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https://issues.apache.org/jira/browse/FLINK-8360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16364047#comment-16364047
 ] 

ASF GitHub Bot commented on FLINK-8360:
---------------------------------------

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

    https://github.com/apache/flink/pull/5239#discussion_r168176949
  
    --- Diff: 
flink-runtime/src/main/java/org/apache/flink/runtime/taskexecutor/TaskManagerServices.java
 ---
    @@ -197,7 +201,13 @@ public static TaskManagerServices fromConfiguration(
                final JobManagerTable jobManagerTable = new JobManagerTable();
     
                final JobLeaderService jobLeaderService = new 
JobLeaderService(taskManagerLocation);
    -           final TaskExecutorLocalStateStoresManager taskStateManager = 
new TaskExecutorLocalStateStoresManager();
    +
    +           final File taskExecutorLocalStateRootDir =
    +                   new 
File(taskManagerServicesConfiguration.getLocalStateRootDir(), 
LOCAL_STATE_SUB_DIRECTORY_ROOT);
    --- End diff --
    
    No, they can share the same directories, because inside things are further 
grouped into per-allocation directories.


> Implement task-local state recovery
> -----------------------------------
>
>                 Key: FLINK-8360
>                 URL: https://issues.apache.org/jira/browse/FLINK-8360
>             Project: Flink
>          Issue Type: New Feature
>          Components: State Backends, Checkpointing
>            Reporter: Stefan Richter
>            Assignee: Stefan Richter
>            Priority: Major
>             Fix For: 1.5.0
>
>
> This issue tracks the development of recovery from task-local state. The main 
> idea is to have a secondary, local copy of the checkpointed state, while 
> there is still a primary copy in DFS that we report to the checkpoint 
> coordinator.
> Recovery can attempt to restore from the secondary local copy, if available, 
> to save network bandwidth. This requires that the assignment from tasks to 
> slots is as sticky is possible.
> For starters, we will implement this feature for all managed keyed states and 
> can easily enhance it to all other state types (e.g. operator state) later.



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