Mairbek Khadikov created BEAM-4061:
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Summary: Chaining SpannerIO#write() transforms
Key: BEAM-4061
URL: https://issues.apache.org/jira/browse/BEAM-4061
Project: Beam
Issue Type: Bug
Components: io-java-gcp
Reporter: Mairbek Khadikov
Assignee: Mairbek Khadikov
Fix For: 2.5.0
It should be possible to chain several Cloud Spanner writes. In practice, we
can leverage Wait.on transform by returning a result object from
SpannerIO#write.
One particular example, when this feature is useful is full database import.
When data in parent tables should be injected before interleaved tables. See
more about table hierarchies in Spanner here
https://cloud.google.com/spanner/docs/schema-and-data-model#creating_a_hierarchy_of_interleaved_tables
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