MetricName bytesRead = SourceMetrics.bytesRead().getName(); MetricName bytesReadBySplit = SourceMetrics.bytesReadBySplit(splitId).getName(); MetricName backlogElementsOfSplit = SourceMetrics.backlogElementsOfSplit(splitId).getName(); MetricName backlogBytesOfSplit = SourceMetrics.backlogBytesOfSplit(splitId).getName();