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https://issues.apache.org/jira/browse/BEAM-1657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15924673#comment-15924673
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ASF GitHub Bot commented on BEAM-1657:
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Github user asfgit closed the pull request at:
https://github.com/apache/beam/pull/2242
> DirectRunner should not call close twice in UnboundedSourceExecutorFactory
> --------------------------------------------------------------------------
>
> Key: BEAM-1657
> URL: https://issues.apache.org/jira/browse/BEAM-1657
> Project: Beam
> Issue Type: Bug
> Components: runner-direct
> Reporter: Ben Chambers
> Assignee: Thomas Groh
> Fix For: First stable release
>
>
> At the end of the processElement, in `finishRead` there is a 5% chance we
> decide to `close` the reader. If the call to {{close}} throws an
> {{IOException}}, it will propagate that exception back to the call to
> {{processElement}}, which will attempt to {{close}} the reader again, which
> violates the {{AutoCloseable}} spec.
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