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Posted to commits@beam.apache.org by "Niel Markwick (JIRA)" <ji...@apache.org> on 2018/10/04 20:45:00 UTC

[jira] [Assigned] (BEAM-4796) SpannerIO waits for all input before writing

     [ https://issues.apache.org/jira/browse/BEAM-4796?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Niel Markwick reassigned BEAM-4796:
-----------------------------------

    Assignee: Niel Markwick  (was: Chamikara Jayalath)

> SpannerIO waits for all input before writing
> --------------------------------------------
>
>                 Key: BEAM-4796
>                 URL: https://issues.apache.org/jira/browse/BEAM-4796
>             Project: Beam
>          Issue Type: Bug
>          Components: io-java-gcp
>    Affects Versions: 2.5.0
>            Reporter: Niel Markwick
>            Assignee: Niel Markwick
>            Priority: Major
>             Fix For: 2.8.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> SpannerIO.Write waits for all input in the window to arrive before getting the schema:
> [https://github.com/apache/beam/blame/release-2.5.0/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/spanner/SpannerIO.java#L841]
>  
> In streaming mode, this is not an issue, but in batch mode, this causes the pipeline to stall until all input is read, which could be a significant amount of time (and temp data). 
>  
>  



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