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Posted to issues@beam.apache.org by "Beam JIRA Bot (Jira)" <ji...@apache.org> on 2021/01/12 17:13:03 UTC

[jira] [Commented] (BEAM-3736) Add SetUp() and TearDown() for CombineFns

    [ https://issues.apache.org/jira/browse/BEAM-3736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17263508#comment-17263508 ] 

Beam JIRA Bot commented on BEAM-3736:
-------------------------------------

This issue is P2 but has been unassigned without any comment for 60 days so it has been labeled "stale-P2". If this issue is still affecting you, we care! Please comment and remove the label. Otherwise, in 14 days the issue will be moved to P3.

Please see https://beam.apache.org/contribute/jira-priorities/ for a detailed explanation of what these priorities mean.


> 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: P2
>              Labels: stale-P2
>          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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