我已經創建的樣本卡夫卡Streams應用程序從教程:卡夫卡流不讀輸入話題
public static void main(String[] args) throws Exception {
Logger log = Logger.getLogger("Name");
Properties props = new Properties();
props.put(StreamsConfig.APPLICATION_ID_CONFIG, "streams-wordprint");
props.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, "192.168.99.100:9092");
props.put(StreamsConfig.DEFAULT_KEY_SERDE_CLASS_CONFIG, Serdes.String().getClass());
props.put(StreamsConfig.DEFAULT_VALUE_SERDE_CLASS_CONFIG, Serdes.String().getClass());
final KStreamBuilder builder = new KStreamBuilder();
builder.stream("onecon_postgres").print();
final KafkaStreams streams = new KafkaStreams(builder, props);
final CountDownLatch latch = new CountDownLatch(1);
// attach shutdown handler to catch control-c
Runtime.getRuntime().addShutdownHook(new Thread("streams-shutdown-hook") {
@Override
public void run() {
streams.close();
latch.countDown();
}
});
try {
streams.start();
log.info("After Start");
latch.await();
} catch (Throwable e) {
System.exit(1);
}
System.exit(0);
}
不幸的應用程序不讀取輸入流。我有一個來自PostgreSQL的JDBC源連接器,它可以很好地處理來自一個數據庫的數據流(我可以在本主題內的Kafka Connect UI數據中看到)。
我已經是即使我已經在在屬性IP改變IP BOOTSTRAP_SERVERS_CONFIG問題是本地主機我不知道爲什麼。
[main] INFO org.apache.kafka.streams.StreamsConfig - StreamsConfig values:
application.id = streams-linesplit
application.server =
**bootstrap.servers = [localhost:9092]**
buffered.records.per.partition = 1000
cache.max.bytes.buffering = 10485760
client.id =
commit.interval.ms = 30000
connections.max.idle.ms = 540000
default.key.serde = class org.apache.kafka.common.serialization.Serdes$StringSerde
default.timestamp.extractor = class org.apache.kafka.streams.processor.FailOnInvalidTimestamp
default.value.serde = class org.apache.kafka.common.serialization.Serdes$StringSerde
key.serde = null
metadata.max.age.ms = 300000
metric.reporters = []
metrics.num.samples = 2
metrics.recording.level = INFO
metrics.sample.window.ms = 30000
num.standby.replicas = 0
num.stream.threads = 1
partition.grouper = class org.apache.kafka.streams.processor.DefaultPartitionGrouper
poll.ms = 100
processing.guarantee = at_least_once
receive.buffer.bytes = 32768
reconnect.backoff.max.ms = 1000
reconnect.backoff.ms = 50
replication.factor = 1
request.timeout.ms = 40000
retry.backoff.ms = 100
rocksdb.config.setter = null
security.protocol = PLAINTEXT
send.buffer.bytes = 131072
state.cleanup.delay.ms = 600000
state.dir = /tmp/kafka-streams
timestamp.extractor = null
value.serde = null
windowstore.changelog.additional.retention.ms = 86400000
zookeeper.connect =
爲了克服這個問題我已經使用netsh的轉發流量,但我不能看到這個應用程序使用我的信息流。
netsh interface portproxy add v4tov4 listenport=9092 listenaddress=127.0.0.1 connectport=9092 connectaddress=192.168.99.100
您是否嘗試調試到您的應用程序?在StreamsThread構造函數中設置一個斷點以查看傳入的配置。同時檢查「StreamsConfig」在解析你的配置時是否做了正確的事情。 –