我正在尝试获取我们的应用程序每天的最大并发用户数,但遇到了一些问题。在每条记录中,我都有一个时间戳、并发和一个server_nameSELECT timestamp, MAX(concurrents) FROM log where server_namelike '%XXXX%' ;然后我尝试了一下:
SELECT timestamp, MAX(concurrents) FROM gss_performance_logg where server_name
在我的Spring Boot Kafka应用程序中,我有以下使用者配置:public ConsumerFactory<String, Post> postConsumerFactory(KafkaProperties kafkaProperties) {
return new DefaultKafkaConsumerFactory<>(kafkaProperties.buildConsumerProperties(), new StringDeserializer(), new JsonDeserializer<>(Post.class
我在我的应用程序中使用Hbase-Hadoop组合,并使用Data Nucleus作为ORM。Exception in thread "Thread-26" javax.jdo.JDODataStoreException
org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able to connect to ZooKeeper but the connection closes immediately. This could be a