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https://issues.apache.org/jira/browse/BEAM-10756?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kenneth Knowles updated BEAM-10756:
-----------------------------------
    Status: Open  (was: Triage Needed)

> TestPubsubSignal provides erroneous messages/out of bounds exception if pull 
> returns empty list
> -----------------------------------------------------------------------------------------------
>
>                 Key: BEAM-10756
>                 URL: https://issues.apache.org/jira/browse/BEAM-10756
>             Project: Beam
>          Issue Type: Bug
>          Components: io-java-gcp
>            Reporter: Luke Cwik
>            Assignee: Luke Cwik
>            Priority: P4
>
> TestPubsubSignal assumes that pull() returns null if nothing is returned 
> which isn't the contract of PubsubClient.java, this leads to an ack warning 
> stating that we acked zero messages and an IndexOutOfBoundsException when 
> attempting to get the first resulting message.



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