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https://issues.apache.org/jira/browse/BEAM-12482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17443403#comment-17443403
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Beam JIRA Bot commented on BEAM-12482:
--------------------------------------
This issue was marked "stale-assigned" and has not received a public comment in
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> BigQueryIO failed to load data to temp table when withSchemaUpdateOptions is
> set.
> ---------------------------------------------------------------------------------
>
> Key: BEAM-12482
> URL: https://issues.apache.org/jira/browse/BEAM-12482
> Project: Beam
> Issue Type: Bug
> Components: io-java-gcp
> Reporter: Siyuan Chen
> Priority: P2
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> `withSchemaUpdateOptions` is only supported with WRITE_APPEND or
> WRITE_TRUNCATE with paritioned table. This is noted in the documentation:
> [https://github.com/apache/beam/blob/master/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigquery/BigQueryIO.java#L1965]
> When the temp files are spilt to multiple load jobs, the write disposition is
> set to WRITE_TRUNCATE for the temporary tables in favor of retries.
> [https://github.com/apache/beam/blob/a8a8b3ab1292ff408940ba4430c95bc754341589/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigquery/WriteTables.java#L219]
> And the loading would fail with error
> "Schema update options should only be specified with WRITE_APPEND
> disposition, or with WRITE_TRUNCATE disposition on a table partition."
>
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