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https://issues.apache.org/jira/browse/BEAM-10489?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kenneth Knowles updated BEAM-10489:
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Status: Open (was: Triage Needed)
> Spanner ReaderWrite Transactions
> --------------------------------
>
> Key: BEAM-10489
> URL: https://issues.apache.org/jira/browse/BEAM-10489
> Project: Beam
> Issue Type: Wish
> Components: io-java-gcp
> Reporter: sailaxmankumar
> Priority: P3
>
> We are currently using SpannerIO Mutations for writing Records to SpannerDB
> using both streaming and batch pipelines:
> However, our business requirements need more functionality in spannerio to be
> able to handle readwrite transactions. Some of the problems we are facing are:
> *Scenario 1:* We need to make sure that the data that gets processed in the
> pipeline and committed into Spanner to be always the latest data. Hence we
> need the capability to be able to read / query specific field eg Date or
> SequenceNumber to compare with before committing the updated record into
> Spanner. Eg. only commit a certain record when the current event’s
> sequenceNumber is greater than whats already in the Spanner row.
> *Scenario 2:* We need to run end of the day batch pipelines which is
> reconcile any missing data from streaming pipelines, but however if there is
> some latest data from streaming during the time of batch data write, we are
> unable to identify which is the latest row as they are two different pipelines
> *Scenario 3:* In a streaming pipeline if an event was delayed and processed
> at later time by adding to backlog queue, we would not want to perform a
> Spanner update query on this event where there is relatively new event to the
> spanner db already.
> If SpannerIO has some capability to create readwrite transactions. It would
> help us to extend it to be utilised in these kind of solutions.
> Could you please help us extend spannerio for such scenarios
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