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https://issues.apache.org/jira/browse/BEAM-1743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15945469#comment-15945469
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ASF GitHub Bot commented on BEAM-1743:
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Github user asfgit closed the pull request at:
https://github.com/apache/beam/pull/2156
> View.AsSingleton should be implemented in terms of a Global Combine, not the
> reverse
> ------------------------------------------------------------------------------------
>
> Key: BEAM-1743
> URL: https://issues.apache.org/jira/browse/BEAM-1743
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-core
> Reporter: Thomas Groh
> Assignee: Thomas Groh
> Fix For: First stable release
>
>
> This improves validation by failing for an input with multiple elements
> before the {{PCollectionView}} is accessed, rather than after it is already
> written to some form of durable storage.
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