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https://issues.apache.org/jira/browse/BEAM-9746?focusedWorklogId=422233&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-422233
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ASF GitHub Bot logged work on BEAM-9746:
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Author: ASF GitHub Bot
Created on: 14/Apr/20 18:43
Start Date: 14/Apr/20 18:43
Worklog Time Spent: 10m
Work Description: lostluck commented on issue #11413: [BEAM-9746] check
for 0 length copies from state
URL: https://github.com/apache/beam/pull/11413#issuecomment-613614431
@thetorpedodog Beam policy permits only one beam expert being involved in a
review as either the author or the reviewer. I fill that role for this PR. I
will be waiting for @youngoli 's review though before merging so they can
continue gaining expertise in the SDK internals, so there will be 2 of us.
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Issue Time Tracking
-------------------
Worklog Id: (was: 422233)
Time Spent: 50m (was: 40m)
> [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
> Priority: Major
> Time Spent: 50m
> Remaining Estimate: 0h
>
> 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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