[
https://issues.apache.org/jira/browse/BEAM-65?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15408251#comment-15408251
]
Eugene Kirpichov commented on BEAM-65:
--------------------------------------
Proposal announced on Beam dev mailing list
https://www.mail-archive.com/[email protected]/msg01248.html
The proposal itself is at https://s.apache.org/splittable-do-fn
> SplittableDoFn
> --------------
>
> Key: BEAM-65
> URL: https://issues.apache.org/jira/browse/BEAM-65
> Project: Beam
> Issue Type: New Feature
> Components: beam-model
> Reporter: Daniel Halperin
> Assignee: Eugene Kirpichov
> Priority: Minor
>
> SplittableDoFn is a proposed enhancement for "dynamically splittable work" to
> the Beam model.
> Among other things, it would allow a unified implementation of
> bounded/unbounded sources with dynamic work rebalancing and the ability to
> express multiple scalable steps (e.g., global expansion -> file sizing &
> parsing -> splitting files into independently-processable blocks) via
> composition rather than inheritance.
> This would make it much easier to implement many types of sources, to modify
> and reuse existing sources. Also, it would improve scalability of the Beam
> model by moving things like splitting a source from the control plane (where
> it is today -- glob -> List<FileBasedSource> sent over service APIs) into the
> data plane (PCollection<Glob> -> PCollection<FileName> -> ...).
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
