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https://issues.apache.org/jira/browse/BEAM-4726?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Burke resolved BEAM-4726.
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Resolution: Fixed
Fix Version/s: Not applicable
I'm reasonably confident we've gone as far as this can go for this pass.
Between arities and code generation, there's not much invocation overhead we
can squeeze out outside of code generating entire exec.Unit scaffolding for
additional compiler optimization.
> Reduce ParDo per element Invoke overhead
> ----------------------------------------
>
> Key: BEAM-4726
> URL: https://issues.apache.org/jira/browse/BEAM-4726
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-go
> Reporter: Robert Burke
> Assignee: Robert Burke
> Priority: Major
> Fix For: Not applicable
>
> Time Spent: 9h 10m
> Remaining Estimate: 0h
>
> Each call to invoke allocates a new args []interface{}, but the common case
> is to run the same ProcessElement function over and again. It should be
> possible to have a container struct to retain the args slice, and avoid
> recomputing the indices for where to assign parameters before calling the
> ProcessElementFn.
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