registers a new aggregator . aggregators registered here are available during the execution of the vertex updates via org.apache.flink.graph.spargel.vertexupdatefunction #getiterationaggregator string and org.apache.flink.graph.spargel.vertexupdatefunction #getpreviousiterationaggregate string . concode_field_sep int parallelism concode_elem_sep Map<String,Aggregator<?>> aggregators concode_elem_sep boolean optNumVertices concode_elem_sep String name concode_elem_sep boolean unmanagedSolutionSet concode_field_sep void setName concode_elem_sep void setSolutionSetUnmanagedMemory concode_elem_sep String getName concode_elem_sep int getParallelism concode_elem_sep boolean isOptNumVertices concode_elem_sep boolean isSolutionSetUnmanagedMemory concode_elem_sep Map<String,Aggregator<?>> getAggregators concode_elem_sep void setParallelism concode_elem_sep void setOptNumVertices
void function ( String arg0 , Aggregator < ? > arg1 ) { this . aggregators . put ( arg0 , arg1 ) ; }