kafka默认使用DefaultPartitioner类作为默认的partition策略规则,具体默认设置是在ProducerConfig类中(如下图) 二.DefaultPartitioner.class 源码分析 1.类关系图 2.源码分析 publicclassDefaultPartitionerimplementsPartitioner{//缓存map key->topic value->RandomNumber 随机数privatefinalConcurrentMap<String, AtomicInteger> ...
public int partition(String topic, Object key, byte[] keyBytes, Object value, byte[] valueBytes, Cluster cluster) { return partition(topic, key, keyBytes, value, valueBytes, cluster, cluster.partitionsForTopic(topic).size()); } /** * Compute the partition for the given record. * * @p...
public int partition(String topic, Object key, byte[] keyBytes, Object value, byte[] valueBytes, Cluster cluster) { partitionList = cluster.availablePartitionsForTopic(topic); input = (String)value; prefix = ((String) value).split("-")[0]; if(kafkaPartitioner.containsKey(prefix)){ return ...
Partitioner.class);默认值为org.apache.kafka.clients.producer.internals.DefaultPartitioner甚至DefaultStream...
apache.kafka.clients.producer.internals.DefaultPartitioner甚至DefaultStreamPartitioner类调用partition(..)...
node-rdkafkawill assign the message to partition 23. Probably relates to#616 Considering the description of thepartitionerconfiguration: murmur2_random - Java Producer compatible Murmur2 hash of key (NULL keys are randomly partitioned. This is functionally equivalent to the default partitioner in the...
- Milvus version: master-20240912-68266cdd - Deployment mode(standalone or cluster):both - MQ type(rocksmq, pulsar or kafka): all - SDK version(e.g. pymilvus v2.0.0rc2):2.5.0rc78 - OS(Ubuntu or CentOS): - CPU/Memory: - GPU: - Others: Current Behavior partition key and nullable...
public KafkaAdmin kafkaAdmin() { Map<String, Object> configs = new HashMap<>(); configs.put(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapAddress); return new KafkaAdmin(configs); } @Bean public NewTopic topic1() { return new NewTopic("developlee", 1, (short) 1); ...
代码示例来源:origin: spring-projects/spring-kafka new TransactionTemplate(tm).execute(s -> { return template.executeInTransaction(t -> { template.sendDefault("foo", "bar"); return null; }); 代码示例来源:origin: spring-projects/spring-kafka ...
Kafka 客户端提供了3 种分区分配策略:RangeAssignor、RoundRobinAssignor 和 StickyAssignor,前两种分配方案相对简单一些StickyAssignor 分配方案相对复杂一些。 RangeAssignor RangeAssignor 是 Kafka 默认的分区分配算法,它是按照 Topic 的维度进行分配的,对于每个 Topic,首先对 Partition 按照分区ID进行排序,然后对订阅这个 ...