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https://issues.apache.org/jira/browse/BEAM-3736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on BEAM-3736 started by null.
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> Add SetUp() and TearDown() for CombineFns
> -----------------------------------------
>
> Key: BEAM-3736
> URL: https://issues.apache.org/jira/browse/BEAM-3736
> Project: Beam
> Issue Type: Improvement
> Components: beam-model, sdk-py-core
> Reporter: Chuan Yu Foo
> Priority: P3
> Time Spent: 13h
> Remaining Estimate: 0h
>
> I have a CombineFn that has a large amount of state that needs to be loaded
> once before it can add_input or merge_combiners (for example, the CombineFn
> might load up a large lookup table used for combining).
> Right now, to initialise this state, for each of the methods, I check if the
> state has already been initialised, and if not, I initialise it. It would be
> nice if CombineFn provided a SetUp() method that is called once to initialise
> this state (and a corresponding TearDown() method to clean up this state if
> necessary).
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