{"record":{"id":"21da0e899c13c985","repo":"apache/druid","slug":"unknown-metric-type-s","errorCode":null,"errorMessage":"Unknown Metric Type [%s]","messagePattern":"Unknown Metric Type \\[(.+?)\\]","errorType":"exception","errorClass":"IllegalStateException","httpStatus":null,"severity":"error","filePath":"extensions-contrib/dropwizard-emitter/src/main/java/org/apache/druid/emitter/dropwizard/DropwizardEmitter.java","lineNumber":159,"sourceCode":"      case meter:\n        metricsRegistry.meter(name).mark(value.longValue());\n        break;\n      case timer:\n        metricsRegistry.timer(name)\n                       .update(value.longValue(), metricSpec.getTimeUnit());\n        break;\n      case counter:\n        metricsRegistry.counter(name).inc(value.longValue());\n        break;\n      case histogram:\n        metricsRegistry.histogram(name).update(value.longValue());\n        break;\n      case gauge:\n        SettableGauge gauge = (SettableGauge) metricsRegistry.gauge(name, () -> new SettableGauge(value));\n        gauge.setValue(value);\n        break;\n      default:\n        throw new ISE(\"Unknown Metric Type [%s]\", metricSpec.getType());\n    }\n  }\n\n  @Override\n  public void flush()\n  {\n    for (DropwizardReporter reporter : reporters) {\n      reporter.flush();\n    }\n  }\n\n  @Override\n  public void close()\n  {\n    final boolean wasStarted = started.getAndSet(false);\n    if (wasStarted) {\n      for (DropwizardReporter reporter : reporters) {\n        reporter.close();","sourceCodeStart":141,"sourceCodeEnd":177,"githubUrl":"https://github.com/apache/druid/blob/9b90983fd291f26935af934383ce360473179e4d/extensions-contrib/dropwizard-emitter/src/main/java/org/apache/druid/emitter/dropwizard/DropwizardEmitter.java#L141-L177","documentation":"updateMetric switches on the metric spec's configured type (meter, timer, counter, histogram, gauge); an unrecognized type value reaches the default branch and is rejected - usually a typo or unsupported type in the dropwizard metrics mapping file.","triggerScenarios":"Thrown at extensions-contrib/dropwizard-emitter/src/main/java/org/apache/druid/emitter/dropwizard/DropwizardEmitter.java:159 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Fix the `type` field in the dropwizard metrics mapping to one of meter/timer/counter/histogram/gauge.","Verify the type value parses into the expected enum as intended."],"exampleFix":null,"handlingStrategy":"validation","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"9b90983fd291f26935af934383ce360473179e4d","analyzedAt":"2026-09-07T13:32:30.957Z","contentChangedAt":"2026-09-07T13:32:30.957Z","schemaVersion":2},"datasetVersion":"2026-09-17T15:17:12.973Z"}