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https://issues.apache.org/jira/browse/BEAM-5216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16660786#comment-16660786
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Glenn Ammons commented on BEAM-5216:
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This issue caused our PubSub -> BigQuery pipeline to stall again; see
b/118289402.
> BigQueryIO multi-partitioned write doesn't work for streaming writes
> --------------------------------------------------------------------
>
> Key: BEAM-5216
> URL: https://issues.apache.org/jira/browse/BEAM-5216
> Project: Beam
> Issue Type: Bug
> Components: io-java-gcp
> Reporter: Chamikara Jayalath
> Priority: Major
>
> BigQueryIO performes multi-partitioned write (MultiPartitionsWriteTables
> step) when there's more data than the quota allowed by BigQuery (10k files or
> 11TB of data) to be written to a single BQ table.
>
> When writing using load jobs in streaming mode (with a triggering frequency)
> we hit following location where we set CREATE_DISPOSITION to CREATE_NEVER for
> all panes other than the first one. This is fine when we are writing a single
> partition (all panes of a window should write to the same table) but when
> there are multiple partitions this is incorrect since we need to create temp
> tables for all panes.
> [https://github.com/apache/beam/blob/master/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigquery/WriteTables.java#L165]
>
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