Hello, I am hoping someone can give me a little more background on why I am receiving the following messages in my broker logs: 2019-10-11 10:32:10,278 INFO [IO-/10.110.54.132:41086] (q.m.s.state) - [IO Pool] [sub:248(vh(/MyVHost)/qu(MyHighVolumeQ)] SUB-1003 : Suspended for 10,001 ms
I have found this [1]: > consumer.suspendNotificationPeriod Governs the length of time that a consumer > may remain suspended before the the Broker begins to produce SUB-1003<https://qpid.apache.org/releases/qpid-broker-j-7.1.5/book/Java-Broker-Appendix-Operation-Logging.html#Java-Broker-Appendix-Operation-Logging-Message-SUB-1003> operational log messages. And also have read this [2]: > Indicates that a subscription has been in a suspened state for an unusual length of time. > This may be indicative of an consuming application that has stopped taking messages from the consumer > (i.e. a JMS application is not calling receive() or its asynchronous message listener > onMessage() is blocked in application code). It may also indicate a generally overloaded system. I am interpreting “its asynchronous message listener onMessage() is blocked in application code” as indicating that something is just taking more that 10 seconds to consume a message. I may just be getting confused by the word “suspended” here, meaning that the broker is just waiting around for the consumer to get on with acknowledging the successful processing of a message. QUESTIONS - Is this simply an indicator that the consumers are taking a long time to service messages? I do have consumers that can take upwards of 30-60 seconds to complete message processing under load. - Is this message “mostly harmless”? i.e. is Qpid just telling me I have a slow consumer? If it matters, I am using Broker-J 7.1.4 on CentOS. [1] https://qpid.apache.org/releases/qpid-broker-j-7.1.5/book/Java-Broker-Management-Managing-Consumers.html [2] https://qpid.apache.org/releases/qpid-broker-j-7.1.5/book/Java-Broker-Appendix-Operation-Logging.html#Java-Broker-Appendix-Operation-Logging-Message-SUB-1003 Thanks for any info. -- Tom
