How to use

incReads

method

in

org.apache.samza.system.kafka.KafkaSystemConsumerMetrics

private void updateMetrics(ConsumerRecord<K, V> r, TopicPartition tp) {
 TopicAndPartition tap = KafkaSystemConsumer.toTopicAndPartition(tp);
 SystemStreamPartition ssp = new SystemStreamPartition(systemName, tp.topic(), new Partition(tp.partition()));
 Long lag = latestLags.get(ssp);
 if (lag == null) {
  throw new SamzaException("Unknown/unregistered ssp in latestLags. ssp=" + ssp + "; system=" + systemName);
 }
 long currentSSPLag = lag.longValue(); // lag between the current offset and the highwatermark
 if (currentSSPLag < 0) {
  return;
 }
 long recordOffset = r.offset();
 long highWatermark = recordOffset + currentSSPLag; // derived value for the highwatermark
 int size = getRecordSize(r);
 kafkaConsumerMetrics.incReads(tap);
 kafkaConsumerMetrics.incBytesReads(tap, size);
 kafkaConsumerMetrics.setOffsets(tap, recordOffset);
 kafkaConsumerMetrics.incClientBytesReads(metricName, size);
 kafkaConsumerMetrics.setHighWatermarkValue(tap, highWatermark);
}

private void updateMetrics(ConsumerRecord<K, V> r, TopicPartition tp) {
 TopicAndPartition tap = KafkaSystemConsumer.toTopicAndPartition(tp);
 SystemStreamPartition ssp = new SystemStreamPartition(systemName, tp.topic(), new Partition(tp.partition()));
 Long lag = latestLags.get(ssp);
 if (lag == null) {
  throw new SamzaException("Unknown/unregistered ssp in latestLags. ssp=" + ssp + "; system=" + systemName);
 }
 long currentSSPLag = lag.longValue(); // lag between the current offset and the highwatermark
 if (currentSSPLag < 0) {
  return;
 }
 long recordOffset = r.offset();
 long highWatermark = recordOffset + currentSSPLag; // derived value for the highwatermark
 int size = getRecordSize(r);
 kafkaConsumerMetrics.incReads(tap);
 kafkaConsumerMetrics.incBytesReads(tap, size);
 kafkaConsumerMetrics.setOffsets(tap, recordOffset);
 kafkaConsumerMetrics.incClientBytesReads(metricName, size);
 kafkaConsumerMetrics.setHighWatermarkValue(tap, highWatermark);
}

private void updateMetrics(ConsumerRecord<K, V> r, TopicPartition tp) {
 TopicAndPartition tap = KafkaSystemConsumer.toTopicAndPartition(tp);
 SystemStreamPartition ssp = new SystemStreamPartition(systemName, tp.topic(), new Partition(tp.partition()));
 Long lag = latestLags.get(ssp);
 if (lag == null) {
  throw new SamzaException("Unknown/unregistered ssp in latestLags. ssp=" + ssp + "; system=" + systemName);
 }
 long currentSSPLag = lag.longValue(); // lag between the current offset and the highwatermark
 if (currentSSPLag < 0) {
  return;
 }
 long recordOffset = r.offset();
 long highWatermark = recordOffset + currentSSPLag; // derived value for the highwatermark
 int size = getRecordSize(r);
 kafkaConsumerMetrics.incReads(tap);
 kafkaConsumerMetrics.incBytesReads(tap, size);
 kafkaConsumerMetrics.setOffsets(tap, recordOffset);
 kafkaConsumerMetrics.incClientBytesReads(metricName, size);
 kafkaConsumerMetrics.setHighWatermarkValue(tap, highWatermark);
}

expectedValues.put(metrics.bytesRead().get(tp1).getName(), "15");
metrics.incReads(tp1);
metrics.incReads(tp1); // total 2
expectedValues.put(metrics.reads().get(tp1).getName(), "2");