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Ben Sidhom commented on BEAM-4228: ---------------------------------- For context, see [https://github.com/apache/beam/pull/5226/files#r185652571.] > The FlinkRunner shouldn't require all of the values for a key to fit in memory > ------------------------------------------------------------------------------ > > Key: BEAM-4228 > URL: https://issues.apache.org/jira/browse/BEAM-4228 > Project: Beam > Issue Type: New Feature > Components: runner-flink > Reporter: Thomas Groh > Priority: Major > > The use of a reducer that adds all of the elements that it consumes to a list > is the primary way in which this occurs - if instead, we produce a filtered > iterable, or a collection of filtered iterables, we can lazily iterate over > all of the contained elements without having to buffer all of the elements. > > For an example of where this occurs, see {{Concatenate}} in > {{FlinkBatchPortablePipelineTranslator}}. -- This message was sent by Atlassian JIRA (v7.6.3#76005)