RabbitMQ(五) -- topics `rabbitmq`中的`topic exchange`将路由键和某模式进行匹配,从而类似于正则匹配的方式去接收喜欢的信息. topic exchange 如果想使用`topic`模式,那么可以随意设置`routing_key`.相反,需要按照一定的要求设定该值.`routing_key`在topic模式中应该选择一组拥有特定属性的单词作为该值. \* (star) can substitute for exactly one word. # (has…
Topics Introduction (starting with old devices) How to handle a new Firmware How to set up your Mac and Device for Vuln Research/Exploit Development How to boot own Kernels How to patch own Code into the Kernel How to write Code for your iDevice Low…
Hi, After enabled Kerberos using Ambari, I got problem creating topics in Kafka using the kafka-topics.sh script. The topic was created, but its status is wrong without leader. It seems the topic is created with PLAINTEXT, while there is only PLAINTE…
PROBLEM DESCRIPTION When creating or deleting topics in Kafka, they cannot be authorized through the Ranger policies. The following errors are displayed while creating the topics: [ADM_xxxx@xxxx-oc-had102 ~]$ /usr/hdp/current/kafka-broker/bin/kafka-t…
一: direct 上面我用采用了广播的模式进行消息的发送,现在我们采用路由的方式对不同的消息进行过滤 发送端代码 public class RoutingSendDirect { private static final String EXCHANGE_NAME = "direct_logs"; // 路由关键字 private static final String[] routingKeys = new String[]{"info" ,"warni…
版本: scala:2.11.8 spark:2.11 hbase:1.2.0-cdh5.14.0 报错信息: java.lang.IllegalStateException: Consumer is not subscribed to any topics or assigned any partitions 分析原因: 从指定的主题或者分区获取数据,在poll之前,你没有订阅任何主题或分区是不行的,每一次poll,消费者都会尝试使用最后一次消费的offset作为接下来获取数据的start o…