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From "Neville Li (JIRA)" <>
Subject [jira] [Created] (BEAM-3247) Sample.any memory constraint
Date Fri, 24 Nov 2017 21:11:00 GMT
Neville Li created BEAM-3247:

             Summary: Sample.any memory constraint
                 Key: BEAM-3247
             Project: Beam
          Issue Type: Improvement
          Components: sdk-java-core
    Affects Versions: 2.1.0
            Reporter: Neville Li
            Assignee: Kenneth Knowles
            Priority: Minor

Right now {{Sample.any}} converts the collection to an iterable view and take first n in a
side input. This may require materializing the entire collection to disk and is potentially

It can be fixed by applying a truncating `DoFn` first, then a combine into `List<T>`
which limits the list size, and finally flattening the list.

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