[KAFKA-3241] JmxReporter produces invalid JSON when a value is Infinity

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: metrics
• Assignee: Unassigned
• Reporter: Babak Behzad
• Created: 16/Feb/16 21:16
• Updated: 03/Aug/18 18:01

Description

We recently realized that the when JmxReporter$KafkaMbean has some metrics with the value Infinity, the JSON created is invalid since the string value "Infinity" or "-Infinity" are not in double-quotes! Here's an example:

 {
    "name" : "kafka.producer:type=producer-node-metrics,client-id=producer-1,node-id=node-1",
    "modelerType" : "org.apache.kafka.common.metrics.JmxReporter$KafkaMbean",
    "request-rate" : 0.0,
    "request-size-avg" : 0.0,
    "incoming-byte-rate" : 0.0,
    "request-size-max" : -Infinity,
    "outgoing-byte-rate" : 0.0,
    "request-latency-max" : -Infinity,
    "request-latency-avg" : 0.0,
    "response-rate" : 0.0
  }

Issue Links

• is related to: KAFKA-4429 records-lag should be zero if FetchResponse is empty