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https://issues.apache.org/jira/browse/BEAM-4563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16512866#comment-16512866
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Scott Wegner commented on BEAM-4563:
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I came across many of these violations while making direct-runner
ErrorProne-clean.
> Fix FutureReturnValueIgnored violations in direct runner
> --------------------------------------------------------
>
> Key: BEAM-4563
> URL: https://issues.apache.org/jira/browse/BEAM-4563
> Project: Beam
> Issue Type: Bug
> Components: runner-direct
> Reporter: Scott Wegner
> Assignee: Thomas Groh
> Priority: Minor
>
> The direct runner has many ErrorProne violations of
> [FutureReturnValueIgnored|http://errorprone.info/bugpattern/FutureReturnValueIgnored]
> which seem like legitimate areas where we are potentially ignoring
> exceptions from asynchronous work. Solving these will require API changes in
> various places to block on asyc work or pass a {{Future}} back to the caller.
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