in spark-job/src/main/java/org/apache/cassandra/diff/RangeStats.java [180:186]
public boolean allMatches () {
return onlyInSource.sum() == 0
&& errorPartitions.sum() == 0
&& onlyInTarget.sum() == 0
&& mismatchedValues.sum() == 0
&& skippedPartitions.sum() == 0;
}