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From "Neville Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BEAM-2532) BigQueryIO source should avoid expensive JSON schema parsing for every record
Date Mon, 17 Jul 2017 21:30:00 GMT

    [ https://issues.apache.org/jira/browse/BEAM-2532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16090599#comment-16090599
] 

Neville Li commented on BEAM-2532:
----------------------------------

Would love to see a fix in the next release. This is a big performance regression for us since
we use BigQuery heavily.

> BigQueryIO source should avoid expensive JSON schema parsing for every record
> -----------------------------------------------------------------------------
>
>                 Key: BEAM-2532
>                 URL: https://issues.apache.org/jira/browse/BEAM-2532
>             Project: Beam
>          Issue Type: Improvement
>          Components: sdk-java-gcp
>    Affects Versions: 2.0.0
>            Reporter: Marian Dvorsky
>            Assignee: Chamikara Jayalath
>            Priority: Minor
>
> BigQueryIO source converts the schema from JSON for every input row, here:
> https://github.com/apache/beam/blob/master/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigquery/BigQuerySourceBase.java#L159
> This is the performance bottleneck in a simple pipeline with BigQueryIO source.



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