K
- ID typeVV
- vertex value typeEV
- edge value typepublic class VertexDegree<K,VV,EV> extends GraphAlgorithmWrappingDataSet<K,VV,EV,Vertex<K,org.apache.flink.types.LongValue>>
Constructor and Description |
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VertexDegree() |
Modifier and Type | Method and Description |
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protected String |
getAlgorithmName()
Algorithms are identified by name rather than by class to allow subclassing.
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protected boolean |
mergeConfiguration(GraphAlgorithmWrappingDataSet other)
An algorithm must first test whether the configurations can be merged
before merging individual fields.
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org.apache.flink.api.java.DataSet<Vertex<K,org.apache.flink.types.LongValue>> |
runInternal(Graph<K,VV,EV> input)
The implementation of the algorithm, renamed from
GraphAlgorithm.run(Graph) . |
VertexDegree<K,VV,EV> |
setIncludeZeroDegreeVertices(boolean includeZeroDegreeVertices)
By default only the edge set is processed for the computation of degree.
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VertexDegree<K,VV,EV> |
setParallelism(int parallelism)
Override the operator parallelism.
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VertexDegree<K,VV,EV> |
setReduceOnTargetId(boolean reduceOnTargetId)
The degree can be counted from either the edge source or target IDs.
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equals, hashCode, run
public VertexDegree<K,VV,EV> setIncludeZeroDegreeVertices(boolean includeZeroDegreeVertices)
includeZeroDegreeVertices
- whether to output vertices with a
degree of zeropublic VertexDegree<K,VV,EV> setReduceOnTargetId(boolean reduceOnTargetId)
reduceOnTargetId
- set to true
if the input edge list
is sorted by target IDpublic VertexDegree<K,VV,EV> setParallelism(int parallelism)
parallelism
- operator parallelismprotected String getAlgorithmName()
GraphAlgorithmWrappingDataSet
getAlgorithmName
in class GraphAlgorithmWrappingDataSet<K,VV,EV,Vertex<K,org.apache.flink.types.LongValue>>
protected boolean mergeConfiguration(GraphAlgorithmWrappingDataSet other)
GraphAlgorithmWrappingDataSet
mergeConfiguration
in class GraphAlgorithmWrappingDataSet<K,VV,EV,Vertex<K,org.apache.flink.types.LongValue>>
other
- the algorithm with which to compare and mergepublic org.apache.flink.api.java.DataSet<Vertex<K,org.apache.flink.types.LongValue>> runInternal(Graph<K,VV,EV> input) throws Exception
GraphAlgorithmWrappingDataSet
GraphAlgorithm.run(Graph)
.runInternal
in class GraphAlgorithmWrappingDataSet<K,VV,EV,Vertex<K,org.apache.flink.types.LongValue>>
input
- the input graphException
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