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https://issues.apache.org/jira/browse/BEAM-1003?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kenneth Knowles closed BEAM-1003.
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Resolution: Duplicate
Fix Version/s: Not applicable
Looks like an exact duplicate, a la form resubmission.
> Enable caching of side-input dependent computations
> ---------------------------------------------------
>
> Key: BEAM-1003
> URL: https://issues.apache.org/jira/browse/BEAM-1003
> Project: Beam
> Issue Type: New Feature
> Components: beam-model
> Reporter: Robert Bradshaw
> Assignee: Frances Perry
> Fix For: Not applicable
>
>
> Sometimes the kind of computations one wants to perform in startBundle depend
> on side inputs (and, implicitly, the window). For example, one might want to
> initialize a (non-serializable) stateful object. In particular, this leads to
> users incorrectly (in the case of triggered or non-globally-windowed side
> inputs) memoizing this computation in the first processElement call.
> One option would be to fold this into a customizable ViewFn.
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