[BEAM-4061] Chaining SpannerIO#write() transforms

• Type: Bug
• Status: Resolved
• Priority: P2
• Resolution: Fixed
• Fix Version/s: 2.5.0
• Component/s: io-java-gcp
• Assignee: Mairbek Khadikov
• Reporter: Mairbek Khadikov
• Created: 12/Apr/18 21:47
• Updated: 16/May/20 13:57
• Resolved: 11/Jul/18 21:11

Description

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

Issue Links

• links to: GitHub Pull Request #4264