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https://issues.apache.org/jira/browse/BEAM-1655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15941408#comment-15941408
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ASF GitHub Bot commented on BEAM-1655:
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Github user tgroh closed the pull request at:
https://github.com/apache/beam/pull/2321
> Evaluate the PubsubUnboundedSource
> ----------------------------------
>
> Key: BEAM-1655
> URL: https://issues.apache.org/jira/browse/BEAM-1655
> Project: Beam
> Issue Type: Bug
> Components: sdk-java-extensions
> Reporter: Ben Chambers
> Assignee: Thomas Groh
>
> This source includes a lot of assumptions & assertions that may cause
> problems on runners that implement UnboundedSources differently. For example:
> 1. It requires that finalizeCheckpoint is called at most once.
> 2. It requires that the checkpoint be finalized within the pubsub timeout, or
> the messages will be redelivered.
> ... (possibly other assumptions) ...
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