@SuppressWarnings("rawtypes")
@Override
public int compare(WritableComparable w1, WritableComparable w2) {
ArticleIDTimestampWritable firstComposite = (ArticleIDTimestampWritable) w1;
ArticleIDTimestampWritable secondComposite = (ArticleIDTimestampWritable) w2;
int result = firstComposite.getArticleId().compareTo(secondComposite.getArticleId());
if (result == 0) {
Date cmpDate = ISO8601Utils.parse(secondComposite.getTimeStamp());
Date originDate = ISO8601Utils.parse(firstComposite.getTimeStamp());
result = -originDate.compareTo(cmpDate);
}
return result;
}
@Override
public int getPartition(ArticleIDTimestampWritable key, IntWritable value, int numPartitions) {
int hash = key.getArticleId().hashCode();
return hash % numPartitions;
}