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https://issues.apache.org/jira/browse/BEAM-6756?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on BEAM-6756 started by Shehzaad Nakhoda.
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> Support lazy iterables in schemas
> ---------------------------------
>
> Key: BEAM-6756
> URL: https://issues.apache.org/jira/browse/BEAM-6756
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-java-core
> Reporter: Reuven Lax
> Assignee: Shehzaad Nakhoda
> Priority: Major
>
> The iterables returned by GroupByKey and CoGroupByKey are lazy; this allows a
> runner to page data into memory if the full iterable is too large. We
> currently don't support this in Schemas, so the Schema Group and CoGroup
> transforms materialize all data into memory. We should add support for this.
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