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https://issues.apache.org/jira/browse/FLINK-1523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14501335#comment-14501335
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ASF GitHub Bot commented on FLINK-1523:
---------------------------------------
Github user vasia commented on a diff in the pull request:
https://github.com/apache/flink/pull/537#discussion_r28643683
--- Diff:
flink-staging/flink-gelly/src/main/java/org/apache/flink/graph/spargel/VertexCentricIteration.java
---
@@ -24,18 +24,24 @@
import org.apache.commons.lang3.Validate;
import org.apache.flink.api.common.aggregators.Aggregator;
+import org.apache.flink.api.common.functions.FlatJoinFunction;
+import org.apache.flink.api.common.functions.MapFunction;
import org.apache.flink.api.java.DataSet;
+import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.api.java.operators.DeltaIteration;
import org.apache.flink.api.common.functions.RichCoGroupFunction;
import org.apache.flink.api.common.typeinfo.TypeInformation;
import org.apache.flink.api.java.operators.CoGroupOperator;
import org.apache.flink.api.java.operators.CustomUnaryOperation;
import org.apache.flink.api.java.tuple.Tuple2;
+import org.apache.flink.api.java.tuple.Tuple3;
import org.apache.flink.api.java.typeutils.ResultTypeQueryable;
import org.apache.flink.api.java.typeutils.TupleTypeInfo;
import org.apache.flink.api.java.typeutils.TypeExtractor;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.graph.Edge;
+import org.apache.flink.graph.EdgeDirection;
+import org.apache.flink.graph.Graph;
import org.apache.flink.graph.Vertex;
import org.apache.flink.util.Collector;
--- End diff --
Could you please also update the description referring to the
`withPlainEdges` and `withValuedEdges` methods? This is no longer the case :-)
> Vertex-centric iteration extensions
> -----------------------------------
>
> Key: FLINK-1523
> URL: https://issues.apache.org/jira/browse/FLINK-1523
> Project: Flink
> Issue Type: Improvement
> Components: Gelly
> Reporter: Vasia Kalavri
> Assignee: Andra Lungu
>
> We would like to make the following extensions to the vertex-centric
> iterations of Gelly:
> - allow vertices to access their in/out degrees and the total number of
> vertices of the graph, inside the iteration.
> - allow choosing the neighborhood type (in/out/all) over which to run the
> vertex-centric iteration. Now, the model uses the updates of the in-neighbors
> to calculate state and send messages to out-neighbors. We could add a
> parameter with value "in/out/all" to the {{VertexUpdateFunction}} and
> {{MessagingFunction}}, that would indicate the type of neighborhood.
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