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Posted to commits@beam.apache.org by "Aviem Zur (JIRA)" <ji...@apache.org> on 2017/04/02 03:13:41 UTC
[jira] [Updated] (BEAM-1858) improve error message when Create.of()
is called with an empty iterator
[ https://issues.apache.org/jira/browse/BEAM-1858?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Aviem Zur updated BEAM-1858:
----------------------------
Component/s: (was: beam-model)
sdk-java-core
> improve error message when Create.of() is called with an empty iterator
> -----------------------------------------------------------------------
>
> Key: BEAM-1858
> URL: https://issues.apache.org/jira/browse/BEAM-1858
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-core
> Reporter: Wesley Tanaka
> Assignee: Frances Perry
>
> The current error copy states:
> "java.lang.IllegalArgumentException: Elements must be provided to construct the default Create Coder. To Create an empty PCollection, either call Create.empty(Coder), or call 'withCoder(Coder)' on the result PTransform"
> This is potentially confusing for two reasons:
> 1. "the default Create Coder" assumes a high level of knowledge of how Create class works
> 2. since "Create" is a common word, it may not be immediately clear that Create is referring to org.apache.beam.sdk.transforms.Create as opposed to the possibility that there might be a compound noun in Beam model called "Create Coder"
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