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  1. Apache NiFi
  2. NIFI-6716

Prometheus Metrics Server returns 500 when a Remote Process Group used

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.10.0
    • Component/s: Extensions
    • Labels:

      Description

      Prometheus Metrics Server returns 500 (Internal Server Error) when a Remote Process Group is used. The error message:

      java.lang.IllegalArgumentException: Incorrect number of labels.
      at io.prometheus.client.SimpleCollector.labels(SimpleCollector.java:64)
      at org.apache.nifi.reporting.prometheus.api.PrometheusMetricsUtil.createNifiMetrics(PrometheusMetricsUtil.java:405)
      at org.apache.nifi.reporting.prometheus.PrometheusServer$MetricsServlet.doGet(PrometheusServer.java:74)

      Just because the labels number of `ACTIVE_REMOTE_PORT_COUNT`, `INACTIVE_REMOTE_PORT_COUNT`, and `AVERAGE_LINEAGE_DURATION` are unmatched.

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              • Assignee:
                kotarot Kotaro Terada
                Reporter:
                kotarot Kotaro Terada
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