Help Center/ MapReduce Service/ Developer Guide (Normal_3.x)/ Kafka Development Guide (Security Mode)/ More Information/ FAQ/ Running the Producer.java Sample to Obtain Metadata Fails and "ERROR fetching topic metadata for topics..." Is Displayed, Even the Access Permission for the Related Topic
Updated on 2022-08-16 GMT+08:00
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Running the Producer.java Sample to Obtain Metadata Fails and "ERROR fetching topic metadata for topics..." Is Displayed, Even the Access Permission for the Related Topic

Troubleshooting Procedure

  1. Find bootstrap.servers in producer.properties under the conf directory of the project, and check whether the IP address and port ID are configured correctly.

    • If the IP address is inconsistent with the service IP address of the Kafka cluster, change the IP address to the correct one.
    • If the port ID is 21007 (security mode port), change it to 9092 (normal mode port).

  2. Check whether network connections are correct to ensure that the current device can access the Kafka cluster normally.
Parent topic: FAQ