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Posted to issues@beam.apache.org by "Pablo Estrada (Jira)" <ji...@apache.org> on 2019/09/04 20:00:03 UTC

[jira] [Assigned] (BEAM-7822) TriggerCopyJobs in BQ file loads is not atmomic in case of failure

     [ https://issues.apache.org/jira/browse/BEAM-7822?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Pablo Estrada reassigned BEAM-7822:
-----------------------------------

    Assignee: Tanay Tummalapalli

> TriggerCopyJobs in BQ file loads is not atmomic in case of failure
> ------------------------------------------------------------------
>
>                 Key: BEAM-7822
>                 URL: https://issues.apache.org/jira/browse/BEAM-7822
>             Project: Beam
>          Issue Type: Test
>          Components: io-py-gcp
>    Affects Versions: 2.13.0
>            Reporter: Tanay Tummalapalli
>            Assignee: Tanay Tummalapalli
>            Priority: Minor
>
> Scenario:
> If temp_tables are being used, during copying data from the temp table to the destination table, if there is a failure in BigQuery mid-way through execution, it will raise an Exception causing the pipeline to fail. As a result, some temp_tables will be copied and some will not be. When the pipeline is rerun, it will cause the same data to be written to new temp_tables and copy jobs will be triggered to copy this data to the destination table. 
> This will result in duplicate data being written to the BigQuery destination table.



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