public StringifiedAccumulatorResult[] getAggregatedUserAccumulatorsStringified() {
Map<String, Accumulator<?, ?>> userAccumulators = new HashMap<String, Accumulator<?, ?>>();
for (ExecutionVertex vertex : taskVertices) {
Map<String, Accumulator<?, ?>> next =
vertex.getCurrentExecutionAttempt().getUserAccumulators();
if (next != null) {
AccumulatorHelper.mergeInto(userAccumulators, next);
}
}
return StringifiedAccumulatorResult.stringifyAccumulatorResults(userAccumulators);
}
