Robert Burke created BEAM-9746:
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Summary: [Go SDK] Empty side inputs causing spurious zero elements
Key: BEAM-9746
URL: https://issues.apache.org/jira/browse/BEAM-9746
Project: Beam
Issue Type: Improvement
Components: sdk-go
Reporter: Robert Burke
Assignee: Robert Burke
A user discovered that empty side inputs would spuriously provide a single zero
element.
The error was narrowed down to the Go SDK's state manager code copying the
stateGetResponse data wasn't checking that the original data source even had
any bytes in it, leading it in particular to interpret length prefixed data as
having 0 length, which would cause zero value elements to be generated.
Notably, this caused empty strings.
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