[jira] [Closed] (FLINK-3756) Introduce state hierarchy in CheckpointCoordinator

["Till Rohrmann (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-3756?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Till Rohrmann closed FLINK-3756.
--------------------------------
    Resolution: Fixed

Fixed via 0cf04108f70375d41ebb7c39629db3a081bd2876

> Introduce state hierarchy in CheckpointCoordinator
> --------------------------------------------------
>
>                 Key: FLINK-3756
>                 URL: https://issues.apache.org/jira/browse/FLINK-3756
>             Project: Flink
>          Issue Type: Sub-task
>          Components: JobManager
>    Affects Versions: 1.1.0
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>             Fix For: 1.1.0
>
>
> Currently, the {{CheckpointCoordinator}} stores the state handles for all tasks in a list. This lack of structure does not allow to easily group all tasks belonging to the same {{ExecutionJobVertex}} together. With the introduction of key groups, it will be necessary to store the key-group state handles of the different tasks grouped together to make them easily accessible for redistribution. 
> Therefore, I propose to introduce the notion of a state for task groups which groups the state for all tasks belonging to the same {{ExecutionJobVertex}} together. This task group can then also be used to accumulate the key-group states from the different tasks.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)