apache / apache/beam

DirectRunner accumulation mode on side inputs not accumulation fired panes

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bug direct P3 runners
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Description

User reports that multimap views for side inputs in the global window when using an accumulation mode trigger only contain the latest firing instead of all firings.

 

Source thread:

https://lists.apache.org/thread.html/1cd1501e2569051ee0916ff26362512b933ee842c946768d16fe9fef@%3Cuser.beam.apache.org%3E

Imported from Jira [BEAM-4470](https://issues.apache.org/jira/browse/BEAM-4470). Original Jira may contain additional context.
Reported by: lcwik.

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