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https://issues.apache.org/jira/browse/FLINK-3277?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Greg Hogan closed FLINK-3277.
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Resolution: Fixed
Implemented in 40749ddcd73c4634d81c2153f64e8934d519be3d
> Use Value types in Gelly API
> ----------------------------
>
> Key: FLINK-3277
> URL: https://issues.apache.org/jira/browse/FLINK-3277
> Project: Flink
> Issue Type: Improvement
> Components: Gelly
> Affects Versions: 1.0.0
> Reporter: Greg Hogan
> Assignee: Greg Hogan
>
> This would be a breaking change so the discussion needs to happen before the
> 1.0.0 release.
> I think it would benefit Flink to use {{Value}} types wherever possible. The
> {{Graph}} functions {{inDegrees}}, {{outDegrees}}, and {{getDegrees}} each
> return {{DataSet<Tuple2<K, Long>>}}. Using {{Long}} creates a new heap object
> for every serialization and deserialization. The mutable {{Value}} types do
> not suffer from this issue when object reuse is enabled.
> I lean towards a preference for conciseness in documentation and performance
> in examples and APIs.
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