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https://issues.apache.org/jira/browse/BEAM-5404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Niel Markwick updated BEAM-5404:
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Labels: (was: pull-request-available)
> Inefficient Serialization of Spanner MutationGroup in pipeline
> --------------------------------------------------------------
>
> Key: BEAM-5404
> URL: https://issues.apache.org/jira/browse/BEAM-5404
> Project: Beam
> Issue Type: Bug
> Components: io-java-gcp
> Affects Versions: 2.3.0, 2.4.0, 2.5.0, 2.6.0
> Reporter: Niel Markwick
> Assignee: Chamikara Jayalath
> Priority: Major
> Fix For: Not applicable
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> The Cloud Spanner connector uses a custom serialization mechanism to convert
> MutationGroup objects into a byte array.
> This mechanism is very inefficient producing byte arrays approx 10x larger
> than simple Java Serialization of the MutationGroup objects, which increases
> the resources needed by the connector to ~40x the size of the original
> mutations.
> There are no obvious benefits to using this custom serialization system, as
> the objects are deserialized within the pipeline itself.
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