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From "Reuven Lax (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BEAM-1458) Checkpoint support in Beam
Date Thu, 22 Jun 2017 05:16:00 GMT

    [ https://issues.apache.org/jira/browse/BEAM-1458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16058773#comment-16058773
] 

Reuven Lax commented on BEAM-1458:
----------------------------------

Correct - I'm working on a doc for snapshot/update support for Beam. My proposal is a bit
more general than this as it includes the following addition. Start a new (possibly different)
pipeline from a checkpoint. This allows the user to modify their code, possibly add new stages,
and then resume that pipeline from a checkpoint. This is a generalization of the "update"
feature that Dataflow has. It requires a compatibility check to ensure that the new pipeline
is compatible with the checkpoint.


> Checkpoint support in Beam
> --------------------------
>
>                 Key: BEAM-1458
>                 URL: https://issues.apache.org/jira/browse/BEAM-1458
>             Project: Beam
>          Issue Type: Improvement
>          Components: beam-model
>    Affects Versions: 0.5.0
>            Reporter: Rafal Wojdyla
>              Labels: features
>
> Beam could support checkpoints - similar to:
>  * flink's snapshots
>  * scalding's checkpoints
> Checkpoint should provides a simple mechanism to read and write intermediate results.
It would be useful for debugging one part of a long flow, when you would otherwise have to
run many steps to get to the one you care about.



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