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Posted to commits@beam.apache.org by "Thomas Groh (JIRA)" <ji...@apache.org> on 2017/04/18 22:45:42 UTC
[jira] [Resolved] (BEAM-1949) Rename DoFn.Context#sideOutput to
#output
[ https://issues.apache.org/jira/browse/BEAM-1949?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Thomas Groh resolved BEAM-1949.
-------------------------------
Resolution: Feedback Received
Fix Version/s: First stable release
> Rename DoFn.Context#sideOutput to #output
> -----------------------------------------
>
> Key: BEAM-1949
> URL: https://issues.apache.org/jira/browse/BEAM-1949
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-core
> Reporter: Thomas Groh
> Assignee: Thomas Groh
> Fix For: First stable release
>
>
> Having two methods, both named output, one which takes the "main output type" and one that takes a tag to specify the type more clearly communicates the actual behavior - sideOutput isn't a "special" way to output, it's the same as output(T), just to a specified PCollection. This will help pipeline authors understand the actual behavior of outputting to a tag, and detangle it from "sideInput", which is a special way to receive input. Giving them the same name means that it's not even strange to call output and provide the main output type, which is what we want - it's a more specific way to output, but does not have different restrictions or capabilities.
> This is also a pretty small change within the SDK - it touches about 20 files, and the changes are pretty automatic.
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