Java Operation Kafka execution is unsuccessful

Use the kafka-clients operation kafka is always unsuccessful, the reasons are unclear, the following posted related code and configuration, please know how to guide, thank you!

Environment and dependence

<dependency>    <groupId>org.apache.kafka</groupId>    <artifactId>kafka-clients</artifactId>    <version>0.10.2.0</version></dependency>

JDKVersion 1.8, Kafka version 2.12-0.10.2.0 , server use CentOS-7 build.

Test code

• Testbase.java

public class TestBase {    protected Logger log = LoggerFactory.getLogger(this.getClass());    protected String kafka_server = "192.168.60.160:9092" ;    protected String topic = "zlikun_topic";}

• Producertest.java

public class Producertest extends Testbase {protected Properties props = new properties ();        @Before public void init () {props.put (producerconfig.bootstrap_servers_config, kafka_server);        Props.put (Producerconfig.acks_config, "all");        Props.put (producerconfig.retries_config, 0);        Props.put (Producerconfig.batch_size_config, 16384);        Props.put (Producerconfig.linger_ms_config, 1);        Props.put (Producerconfig.buffer_memory_config, 33554432);        Props.put (Producerconfig.key_serializer_class_config, Stringserializer.class);        Props.put (Producerconfig.value_serializer_class_config, Stringserializer.class);    Props.put (Producerconfig.partitioner_class_config, Mypartitioner.class); } @Test public void Test () throws Interruptedexception {kafkaproducer<string, string> producer = new K        Afkaproducer<> (props); Send message for (int i = 0; i < i++) {producer.send (new producerrecord<stRing, string> (topic, integer.tostring (i), integer.tostring (i)), new Callback () {@Override                        public void Oncompletion (Recordmetadata recordmetadata, Exception e) {if (E = = null) {                    System.out.printf ("offset =%d, partition =%d \ n", Recordmetadata.offset (), recordmetadata.partition ());                    } else {log.error ("Send Error!", e);        }                }            });        } TimeUnit.SECONDS.sleep (3);    Producer.close (); }}

• Consumertest.java

public class Consumertest extends Testbase {private Properties props = new properties ();        @Before public void init () {props.put (consumerconfig.bootstrap_servers_config, kafka_server);        Props.put (Consumerconfig.group_id_config, "Zlikun");        Props.put (Consumerconfig.enable_auto_commit_config, "true");        Props.put (Consumerconfig.auto_commit_interval_ms_config, "1000");        Props.put (Consumerconfig.key_deserializer_class_config, Stringdeserializer.class);    Props.put (Consumerconfig.value_deserializer_class_config, Stringdeserializer.class);        } @Test public void Test () {consumer<string, string> Consumer = new kafkaconsumer<> (props);        Consumer.subscribe (arrays.aslist (topic));//Consumer.assign (Arrays.aslist (New Topicpartition (topic, 1));            while (true) {consumerrecords<string, string> records = Consumer.poll (100); For (consumerrecord<string, string> record:records) {               System.out.printf ("offset =%d, key =%s, value =%s%n", Record.offset (), Record.key (), Record.value ()); }        }    }}

Problem

# 测试topic为手动创建$ bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 4 --topic zlikun_topic

Console output Information

[Kafka-producer-network-thread | producer-1] Error Com.zlikun.mq.producertest-send error!org.apache.kafka.common.errors.timeoutexception:expiring 2 record (s) For zlikun_topic-3:30042 Ms have passed since batch creation plus linger Time[kafka-producer-network-thread | producer-1] Error Com.zlikun.mq.producertest-send error!org.apache.kafka.common.errors.timeoutexception:expiring 2 record (s) For zlikun_topic-3:30042 Ms have passed since batch creation plus linger Time[kafka-producer-network-thread | producer-1] Error Com.zlikun.mq.producertest-send error!org.apache.kafka.common.errors.timeoutexception:expiring 2 record (s) For zlikun_topic-2:30042 Ms have passed since batch creation plus linger Time[kafka-producer-network-thread | producer-1] Error Com.zlikun.mq.producertest-send error!org.apache.kafka.common.errors.timeoutexception:expiring 2 record (s) For zlikun_topic-2:30042 Ms have passed since batch creation plus linger Time[kafka-producer-network-thread | producer-1] Error Com.zlikun.mq.producertest-send error!org.apache.kafka.common.errors.timeoutexception:expiring 3 record (s) For zlikun_topic-1:30043 MS have passed since batch creation plus linger Time[kafka-producer-network-thread | producer-1] Error Com.zlikun.mq.producertest-send error!org.apache.kafka.common.errors.timeoutexception:expiring 3 record (s) For zlikun_topic-1:30043 MS have passed since batch creation plus linger Time[kafka-producer-network-thread | producer-1] Error Com.zlikun.mq.producertest-send error!org.apache.kafka.common.errors.timeoutexception:expiring 3 record (s) For zlikun_topic-1:30043 MS have passed since batch creation plus linger Time[kafka-producer-network-thread | producer-1] Error Com.zlikun.mq.producertest-send error!org.apache.kafka.common.errors.timeoutexception:expiring 3 record (s) For zlikun_topic-0:30046 Ms have passed since batch creation plus linger Time[kafka-producer-network-thread | producer-1] ERROR Com.zlikun.mq.producertest-send Error!org.apache.kafka.common.errors.timeoutexception:expiring 3 record (s) for zlikun_topic-0:30046 Ms have passed since BA TCH creation plus Linger Time[kafka-producer-network-thread | producer-1] Error com.zlikun.mq.producertest-send error!o Rg.apache.kafka.common.errors.TimeoutException:Expiring 3 record (s) for zlikun_topic-0:30046 Ms have passed since batch C Reation Plus linger time

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Java Operation Kafka execution is unsuccessful