Examples with KafkaMetric org.apache.kafka.common.metrics.KafkaMetric used on opensource projects

Example 46 with KafkaMetric

use of org.apache.kafka.common.metrics.KafkaMetric in project apache-kafka-on-k8s by banzaicloud.

the class FetcherTest method testFetcherMetrics.

/*
     * Send multiple requests. Verify that the client side quota metrics have the right values
     */
@Test
public void testFetcherMetrics() {
    subscriptions.assignFromUser(singleton(tp0));
    subscriptions.seek(tp0, 0);
    MetricName maxLagMetric = metrics.metricInstance(metricsRegistry.recordsLagMax);
    Map<String, String> tags = new HashMap<>();
    tags.put("topic", tp0.topic());
    tags.put("partition", String.valueOf(tp0.partition()));
    MetricName partitionLagMetric = metrics.metricName("records-lag", metricGroup, tags);
    Map<MetricName, KafkaMetric> allMetrics = metrics.metrics();
    KafkaMetric recordsFetchLagMax = allMetrics.get(maxLagMetric);
    // recordsFetchLagMax should be initialized to negative infinity
    assertEquals(Double.NEGATIVE_INFINITY, recordsFetchLagMax.value(), EPSILON);
    // recordsFetchLagMax should be hw - fetchOffset after receiving an empty FetchResponse
    fetchRecords(tp0, MemoryRecords.EMPTY, Errors.NONE, 100L, 0);
    assertEquals(100, recordsFetchLagMax.value(), EPSILON);
    KafkaMetric partitionLag = allMetrics.get(partitionLagMetric);
    assertEquals(100, partitionLag.value(), EPSILON);
    // recordsFetchLagMax should be hw - offset of the last message after receiving a non-empty FetchResponse
    MemoryRecordsBuilder builder = MemoryRecords.builder(ByteBuffer.allocate(1024), CompressionType.NONE, TimestampType.CREATE_TIME, 0L);
    for (int v = 0; v < 3; v++) builder.appendWithOffset(v, RecordBatch.NO_TIMESTAMP, "key".getBytes(), ("value-" + v).getBytes());
    fetchRecords(tp0, builder.build(), Errors.NONE, 200L, 0);
    assertEquals(197, recordsFetchLagMax.value(), EPSILON);
    assertEquals(197, partitionLag.value(), EPSILON);
    // verify de-registration of partition lag
    subscriptions.unsubscribe();
    assertFalse(allMetrics.containsKey(partitionLagMetric));
}

Example 47 with KafkaMetric

use of org.apache.kafka.common.metrics.KafkaMetric in project apache-kafka-on-k8s by banzaicloud.

the class FetcherTest method testFetchResponseMetricsWithOnePartitionError.

@Test
public void testFetchResponseMetricsWithOnePartitionError() {
    subscriptions.assignFromUser(Utils.mkSet(tp0, tp1));
    subscriptions.seek(tp0, 0);
    subscriptions.seek(tp1, 0);
    Map<MetricName, KafkaMetric> allMetrics = metrics.metrics();
    KafkaMetric fetchSizeAverage = allMetrics.get(metrics.metricInstance(metricsRegistry.fetchSizeAvg));
    KafkaMetric recordsCountAverage = allMetrics.get(metrics.metricInstance(metricsRegistry.recordsPerRequestAvg));
    MemoryRecordsBuilder builder = MemoryRecords.builder(ByteBuffer.allocate(1024), CompressionType.NONE, TimestampType.CREATE_TIME, 0L);
    for (int v = 0; v < 3; v++) builder.appendWithOffset(v, RecordBatch.NO_TIMESTAMP, "key".getBytes(), ("value-" + v).getBytes());
    MemoryRecords records = builder.build();
    Map<TopicPartition, FetchResponse.PartitionData> partitions = new HashMap<>();
    partitions.put(tp0, new FetchResponse.PartitionData(Errors.NONE, 100, FetchResponse.INVALID_LAST_STABLE_OFFSET, 0L, null, records));
    partitions.put(tp1, new FetchResponse.PartitionData(Errors.OFFSET_OUT_OF_RANGE, 100, FetchResponse.INVALID_LAST_STABLE_OFFSET, 0L, null, MemoryRecords.EMPTY));
    assertEquals(1, fetcher.sendFetches());
    client.prepareResponse(new FetchResponse(Errors.NONE, new LinkedHashMap<>(partitions), 0, INVALID_SESSION_ID));
    consumerClient.poll(0);
    fetcher.fetchedRecords();
    int expectedBytes = 0;
    for (Record record : records.records()) expectedBytes += record.sizeInBytes();
    assertEquals(expectedBytes, fetchSizeAverage.value(), EPSILON);
    assertEquals(3, recordsCountAverage.value(), EPSILON);
}

Example 48 with KafkaMetric

use of org.apache.kafka.common.metrics.KafkaMetric in project apache-kafka-on-k8s by banzaicloud.

the class FetcherTest method testFetchResponseMetrics.

@Test
public void testFetchResponseMetrics() {
    String topic1 = "foo";
    String topic2 = "bar";
    TopicPartition tp1 = new TopicPartition(topic1, 0);
    TopicPartition tp2 = new TopicPartition(topic2, 0);
    Map<String, Integer> partitionCounts = new HashMap<>();
    partitionCounts.put(topic1, 1);
    partitionCounts.put(topic2, 1);
    Cluster cluster = TestUtils.clusterWith(1, partitionCounts);
    metadata.update(cluster, Collections.<String>emptySet(), time.milliseconds());
    subscriptions.assignFromUser(Utils.mkSet(tp1, tp2));
    int expectedBytes = 0;
    LinkedHashMap<TopicPartition, FetchResponse.PartitionData> fetchPartitionData = new LinkedHashMap<>();
    for (TopicPartition tp : Utils.mkSet(tp1, tp2)) {
        subscriptions.seek(tp, 0);
        MemoryRecordsBuilder builder = MemoryRecords.builder(ByteBuffer.allocate(1024), CompressionType.NONE, TimestampType.CREATE_TIME, 0L);
        for (int v = 0; v < 3; v++) builder.appendWithOffset(v, RecordBatch.NO_TIMESTAMP, "key".getBytes(), ("value-" + v).getBytes());
        MemoryRecords records = builder.build();
        for (Record record : records.records()) expectedBytes += record.sizeInBytes();
        fetchPartitionData.put(tp, new FetchResponse.PartitionData(Errors.NONE, 15L, FetchResponse.INVALID_LAST_STABLE_OFFSET, 0L, null, records));
    }
    assertEquals(1, fetcher.sendFetches());
    client.prepareResponse(new FetchResponse(Errors.NONE, fetchPartitionData, 0, INVALID_SESSION_ID));
    consumerClient.poll(0);
    Map<TopicPartition, List<ConsumerRecord<byte[], byte[]>>> fetchedRecords = fetcher.fetchedRecords();
    assertEquals(3, fetchedRecords.get(tp1).size());
    assertEquals(3, fetchedRecords.get(tp2).size());
    Map<MetricName, KafkaMetric> allMetrics = metrics.metrics();
    KafkaMetric fetchSizeAverage = allMetrics.get(metrics.metricInstance(metricsRegistry.fetchSizeAvg));
    KafkaMetric recordsCountAverage = allMetrics.get(metrics.metricInstance(metricsRegistry.recordsPerRequestAvg));
    assertEquals(expectedBytes, fetchSizeAverage.value(), EPSILON);
    assertEquals(6, recordsCountAverage.value(), EPSILON);
}

Example 49 with KafkaMetric

use of org.apache.kafka.common.metrics.KafkaMetric in project apache-kafka-on-k8s by banzaicloud.

the class FetcherTest method testFetcherLeadMetric.

@Test
public void testFetcherLeadMetric() {
    subscriptions.assignFromUser(singleton(tp0));
    subscriptions.seek(tp0, 0);
    MetricName minLeadMetric = metrics.metricInstance(metricsRegistry.recordsLeadMin);
    Map<String, String> tags = new HashMap<>(2);
    tags.put("topic", tp0.topic());
    tags.put("partition", String.valueOf(tp0.partition()));
    MetricName partitionLeadMetric = metrics.metricName("records-lead", metricGroup, "", tags);
    Map<MetricName, KafkaMetric> allMetrics = metrics.metrics();
    KafkaMetric recordsFetchLeadMin = allMetrics.get(minLeadMetric);
    // recordsFetchLeadMin should be initialized to MAX_VALUE
    assertEquals(Double.MAX_VALUE, recordsFetchLeadMin.value(), EPSILON);
    // recordsFetchLeadMin should be position - logStartOffset after receiving an empty FetchResponse
    fetchRecords(tp0, MemoryRecords.EMPTY, Errors.NONE, 100L, -1L, 0L, 0);
    assertEquals(0L, recordsFetchLeadMin.value(), EPSILON);
    KafkaMetric partitionLead = allMetrics.get(partitionLeadMetric);
    assertEquals(0L, partitionLead.value(), EPSILON);
    // recordsFetchLeadMin should be position - logStartOffset after receiving a non-empty FetchResponse
    MemoryRecordsBuilder builder = MemoryRecords.builder(ByteBuffer.allocate(1024), CompressionType.NONE, TimestampType.CREATE_TIME, 0L);
    for (int v = 0; v < 3; v++) {
        builder.appendWithOffset(v, RecordBatch.NO_TIMESTAMP, "key".getBytes(), ("value-" + v).getBytes());
    }
    fetchRecords(tp0, builder.build(), Errors.NONE, 200L, -1L, 0L, 0);
    assertEquals(0L, recordsFetchLeadMin.value(), EPSILON);
    assertEquals(3L, partitionLead.value(), EPSILON);
    // verify de-registration of partition lag
    subscriptions.unsubscribe();
    assertFalse(allMetrics.containsKey(partitionLeadMetric));
}

Example 50 with KafkaMetric

use of org.apache.kafka.common.metrics.KafkaMetric in project apache-kafka-on-k8s by banzaicloud.

the class FetcherTest method testReadCommittedLagMetric.

@Test
public void testReadCommittedLagMetric() {
    Metrics metrics = new Metrics();
    fetcher = createFetcher(subscriptions, metrics, new ByteArrayDeserializer(), new ByteArrayDeserializer(), Integer.MAX_VALUE, IsolationLevel.READ_COMMITTED);
    subscriptions.assignFromUser(singleton(tp0));
    subscriptions.seek(tp0, 0);
    MetricName maxLagMetric = metrics.metricInstance(metricsRegistry.recordsLagMax);
    Map<String, String> tags = new HashMap<>();
    tags.put("topic", tp0.topic());
    tags.put("partition", String.valueOf(tp0.partition()));
    MetricName partitionLagMetric = metrics.metricName("records-lag", metricGroup, tags);
    MetricName partitionLagMetricDeprecated = metrics.metricName(tp0 + ".records-lag", metricGroup);
    Map<MetricName, KafkaMetric> allMetrics = metrics.metrics();
    KafkaMetric recordsFetchLagMax = allMetrics.get(maxLagMetric);
    // recordsFetchLagMax should be initialized to negative infinity
    assertEquals(Double.NEGATIVE_INFINITY, recordsFetchLagMax.value(), EPSILON);
    // recordsFetchLagMax should be lso - fetchOffset after receiving an empty FetchResponse
    fetchRecords(tp0, MemoryRecords.EMPTY, Errors.NONE, 100L, 50L, 0);
    assertEquals(50, recordsFetchLagMax.value(), EPSILON);
    KafkaMetric partitionLag = allMetrics.get(partitionLagMetric);
    assertEquals(50, partitionLag.value(), EPSILON);
    KafkaMetric partitionLagDeprecated = allMetrics.get(partitionLagMetricDeprecated);
    assertEquals(50, partitionLagDeprecated.value(), EPSILON);
    // recordsFetchLagMax should be lso - offset of the last message after receiving a non-empty FetchResponse
    MemoryRecordsBuilder builder = MemoryRecords.builder(ByteBuffer.allocate(1024), CompressionType.NONE, TimestampType.CREATE_TIME, 0L);
    for (int v = 0; v < 3; v++) builder.appendWithOffset(v, RecordBatch.NO_TIMESTAMP, "key".getBytes(), ("value-" + v).getBytes());
    fetchRecords(tp0, builder.build(), Errors.NONE, 200L, 150L, 0);
    assertEquals(147, recordsFetchLagMax.value(), EPSILON);
    assertEquals(147, partitionLag.value(), EPSILON);
    // verify de-registration of partition lag
    subscriptions.unsubscribe();
    assertFalse(allMetrics.containsKey(partitionLagMetric));
    assertFalse(allMetrics.containsKey(partitionLagMetricDeprecated));
}