{"record":{"id":"cb57363b9943ad2a","repo":"karatelabs/karate","slug":"timeout-waiting-for-karate-test-events-after-timeoutminutes","errorCode":null,"errorMessage":"Timeout waiting for Karate test events after ${timeoutMinutes} minutes","messagePattern":"Timeout waiting for Karate test events after (.+?) minutes","errorType":"exception","errorClass":"RuntimeException","httpStatus":null,"severity":"error","filePath":"karate-junit6/src/main/java/io/karatelabs/junit6/StreamingTestIterator.java","lineNumber":141,"sourceCode":"    }\n\n    /**\n     * Returns this iterator as a {@link Stream} for use with {@code @TestFactory}.\n     *\n     * @return a sequential stream of dynamic nodes\n     */\n    public Stream<DynamicNode> stream() {\n        return StreamSupport.stream(\n                Spliterators.spliteratorUnknownSize(this, Spliterator.ORDERED),\n                false\n        );\n    }\n\n    private DynamicNode pollForNextNode() throws InterruptedException {\n        while (!finished) {\n            TestEvent event = eventQueue.poll(timeoutMinutes, TimeUnit.MINUTES);\n            if (event == null) {\n                throw new RuntimeException(\"Timeout waiting for Karate test events after \" + timeoutMinutes + \" minutes\");\n            }\n\n            DynamicNode node = processEvent(event);\n            if (node != null) {\n                return node;\n            }\n        }\n        return null;\n    }\n\n    private DynamicNode processEvent(TestEvent event) {\n        return switch (event) {\n            case TestEvent.FeatureStart(Feature feature) -> {\n                currentFeature = feature;\n                currentFeatureTests.clear();\n                yield null; // No node yet, wait for scenarios\n            }\n","sourceCodeStart":123,"sourceCodeEnd":159,"githubUrl":"https://github.com/karatelabs/karate/blob/a22eb90246d958d15a47bf436693d0121ad2812d/karate-junit6/src/main/java/io/karatelabs/junit6/StreamingTestIterator.java#L123-L159","documentation":"StreamingTestIterator polls the Karate event queue with a timeout (default in minutes) while JUnit requests the next DynamicNode. If no event arrives within the window and the run is not marked finished, it assumes the producer died and throws this timeout error.","triggerScenarios":"No TestEvent arrives on the queue within timeoutMinutes while pollForNextNode loops — e.g. the feature-executing thread hung or died without publishing an end event.","commonSituations":"A Karate feature blocked indefinitely (network call without timeout, infinite wait), JVM pause, or producer thread crashed before signalling completion.","solutions":["Fix the hanging feature: add timeouts to HTTP/driver calls and avoid indefinite waits","Increase the timeout configuration if features legitimately run longer than the window","Check producer thread logs for a crash that prevented the completion event"],"exampleFix":"// before (feature hangs)\n* configure responseTimeout = 30000\n// after\n* configure responseTimeout = 30000\n* driver / http calls with explicit timeouts and no infinite waits","handlingStrategy":"try-catch","validationCode":"// ensure features cannot hang: set timeouts in karate config\n// * configure responseTimeout = 30000; driver waits bounded","typeGuard":"null","tryCatchPattern":"try {\n  iterator.hasNext();\n} catch (RuntimeException e) {\n  if (e.getMessage() != null && e.getMessage().contains(\"Timeout waiting for Karate test events\")) {\n    log.error(\"Karate producer stalled; aborting suite\");\n    return false;\n  }\n  throw e;\n}","preventionTips":["Configure responseTimeout and bounded waits in all features","Increase the streaming timeout for long-running suites","Monitor for producer-thread crashes that skip completion events"],"tags":["junit","timeout","event-queue","concurrency"],"backgroundTag":"request-timeout","analyzedSha":"a22eb90246d958d15a47bf436693d0121ad2812d","analyzedAt":"2026-09-12T09:01:00.220Z","contentChangedAt":"2026-09-12T09:01:00.220Z","schemaVersion":2},"datasetVersion":"2026-09-16T19:17:19.609Z"}