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https://issues.apache.org/jira/browse/FLINK-21066?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17280058#comment-17280058
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Guowei Ma commented on FLINK-21066:
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Merged on master with 2d4038721e1481222f67f8d283e7f8e239475839
> Refactor the CheckpointCoordinator to compute the tasks to
> trigger/wait/commit dynamically
> ------------------------------------------------------------------------------------------
>
> Key: FLINK-21066
> URL: https://issues.apache.org/jira/browse/FLINK-21066
> Project: Flink
> Issue Type: Sub-task
> Components: API / DataStream, Runtime / Checkpointing
> Reporter: Yun Gao
> Assignee: Yun Gao
> Priority: Major
> Labels: pull-request-available
>
> Currently Flink would identify the tasks to trigger/wait/commit in compile
> phase, and pass them to the CheckpointCoordinator via JobGraph and cache them
> in CheckpointCoordinator. However, to support checkpoint after some tasks
> finished, we might need to recompute the tasks to trigger/wait/commit for
> each checkpoint, thus we would first refactor CheckpointCoordinator to
> compute the tasks to trigger/wait/commit dynamically, but keeps the computing
> logic unchange (e.g., tasks to trigger are source tasks and tasks to
> wait/commit are all tasks)
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