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https://issues.apache.org/jira/browse/BEAM-4141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Henning Rohde resolved BEAM-4141.
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Resolution: Fixed
> Data channel deadlocks when user function fails
> -----------------------------------------------
>
> Key: BEAM-4141
> URL: https://issues.apache.org/jira/browse/BEAM-4141
> Project: Beam
> Issue Type: Bug
> Components: sdk-go
> Affects Versions: Not applicable
> Reporter: Bill Neubauer
> Assignee: Bill Neubauer
> Priority: Major
> Fix For: Not applicable
>
> Time Spent: 2h 50m
> Remaining Estimate: 0h
>
> There is a deadlock condition in the data channel code that occurs when a
> user function fails while processing an element. The producer for the data
> channel is continuing to send information across a channel, but the intended
> consumer has stopped listening. Unfortunately, this channel blocks the entire
> data channel, blocking data for any other DoFn that might be running, causing
> the whole worker to deadlock.
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