Fix join error by caching vTable in mapReduceTriplets
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@ -258,6 +258,9 @@ class GraphImpl[VD: ClassManifest, ED: ClassManifest] protected (
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// Permit joining the result of mapReduceTriplets back with vTable
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vTable.cache()
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// do the final reduction reusing the index map
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// do the final reduction reusing the index map
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vTable.aggregateUsingIndex(preAgg, reduceFunc)
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vTable.aggregateUsingIndex(preAgg, reduceFunc)
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} // end of mapReduceTriplets
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} // end of mapReduceTriplets
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