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https://issues.apache.org/jira/browse/BEAM-8528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16965482#comment-16965482
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Kenneth Knowles commented on BEAM-8528:
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[~robertwb] [~altay] is there a best point of contact for Python direct runner
bug reports?
> BigQuery bounded source does not work on DirectRunner
> -----------------------------------------------------
>
> Key: BEAM-8528
> URL: https://issues.apache.org/jira/browse/BEAM-8528
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Kamil Wasilewski
> Priority: Major
>
> {code:java}
> File
> "/home/Kamil/projects/beam/sdks/python/apache_beam/io/gcp/bigquery.py", line
> 639, in get_range_tracker
> raise NotImplementedError('BigQuery source must be split before being
> read')
> NotImplementedError: BigQuery source must be split before being read
> {code}
>
> _get_range_tracker_ and _read_ methods aren't implemented in
> __BigQuerySource_. This is purposeful — the runner is expected to call
> _split_ instead. The Java implementation works the same way:
> [link|https://github.com/apache/beam/blob/c2f0d282337f3ae0196a7717712396a5a41fdde1/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigquery/BigQuerySourceBase.java]
> It seems that DataflowRunner and Flink are able to catch these exceptions
> somehow, while DirectRunner is not.
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