How to use

setNumTopicPartitions

method

in

org.apache.samza.system.kafka.KafkaSystemConsumerMetrics

/**
 * Add new partition to the list of polled partitions.
 * Bust only be called before {@link KafkaConsumerProxy#start} is called..
 */
public void addTopicPartition(SystemStreamPartition ssp, long nextOffset) {
 LOG.info(String.format("Adding new topicPartition %s with offset %s to queue for consumer %s", ssp, nextOffset,
   this));
 topicPartitionToSSP.put(KafkaSystemConsumer.toTopicPartition(ssp), ssp); //registered SSPs
 // this is already vetted offset so there is no need to validate it
 nextOffsets.put(ssp, nextOffset);
 kafkaConsumerMetrics.setNumTopicPartitions(metricName, nextOffsets.size());
}

/**
 * Add new partition to the list of polled partitions.
 * Bust only be called before {@link KafkaConsumerProxy#start} is called..
 */
public void addTopicPartition(SystemStreamPartition ssp, long nextOffset) {
 LOG.info(String.format("Adding new topicPartition %s with offset %s to queue for consumer %s", ssp, nextOffset,
   this));
 topicPartitionToSSP.put(KafkaSystemConsumer.toTopicPartition(ssp), ssp); //registered SSPs
 // this is already vetted offset so there is no need to validate it
 nextOffsets.put(ssp, nextOffset);
 kafkaConsumerMetrics.setNumTopicPartitions(metricName, nextOffsets.size());
}

/**
 * Add new partition to the list of polled partitions.
 * Bust only be called before {@link KafkaConsumerProxy#start} is called..
 */
public void addTopicPartition(SystemStreamPartition ssp, long nextOffset) {
 LOG.info(String.format("Adding new topicPartition %s with offset %s to queue for consumer %s", ssp, nextOffset,
   this));
 topicPartitionToSSP.put(KafkaSystemConsumer.toTopicPartition(ssp), ssp); //registered SSPs
 // this is already vetted offset so there is no need to validate it
 nextOffsets.put(ssp, nextOffset);
 kafkaConsumerMetrics.setNumTopicPartitions(metricName, nextOffsets.size());
}

metrics.setNumTopicPartitions(clientName, 2); // "topic-partitions"
metrics.setNumTopicPartitions(clientName, 3); // final value 3
expectedValues.put(metrics.topicPartitions().get(clientName).getName(), "3");