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https://issues.apache.org/jira/browse/FLINK-3277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15152855#comment-15152855
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ASF GitHub Bot commented on FLINK-3277:
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GitHub user greghogan opened a pull request:
https://github.com/apache/flink/pull/1671
[FLINK-3277] Use Value types in Gelly API
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/greghogan/flink
3277_use_value_types_in_gelly_api
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/1671.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1671
----
commit 3770468f7a9b9ea2895495e522d0d421e1f16c08
Author: Greg Hogan <[email protected]>
Date: 2016-02-18T15:40:39Z
[FLINK-3277] Use Value types in Gelly API
----
> 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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