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https://issues.apache.org/jira/browse/BEAM-6696?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on BEAM-6696 started by Shehzaad Nakhoda.
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> GroupIntoBatches transform for Python SDK
> -----------------------------------------
>
> Key: BEAM-6696
> URL: https://issues.apache.org/jira/browse/BEAM-6696
> Project: Beam
> Issue Type: New Feature
> Components: sdk-py-core
> Reporter: Ahmet Altay
> Assignee: Shehzaad Nakhoda
> Priority: Major
>
> Add a PTransform that batches inputs to a desired batch size. Batches will
> contain only elements of a single key.
> It should offer the same API as its Java counterpart:
> https://github.com/apache/beam/blob/11a977b8b26eff2274d706541127c19dc93131a2/sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/GroupIntoBatches.java
> Unlike BatchElements transform
> (https://github.com/apache/beam/blob/11a977b8b26eff2274d706541127c19dc93131a2/sdks/python/apache_beam/transforms/util.py#L461)
> GroupIntoBatches will use state to batch across bundles as well.
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