Lianet Magrans created KAFKA-16777: -------------------------------------- Summary: New consumer should throw NoOffsetForPartitionException on continuous poll zero if no reset strategy Key: KAFKA-16777 URL: https://issues.apache.org/jira/browse/KAFKA-16777 Project: Kafka Issue Type: Bug Components: consumer Reporter: Lianet Magrans
If the consumer does not define an offset reset strategy, a call to poll should fail with NoOffsetForPartitionException. That works as expected on the new consumer when polling with a timeout > 0 (existing integration test [here|https://github.com/apache/kafka/blob/ba19eedb90fc3a3efc97714e3ea125647338fc66/core/src/test/scala/integration/kafka/api/PlaintextConsumerFetchTest.scala#L36]), but fails when polling continuously with ZERO timeout. This can be easily reproduced with a new integration test like this (passes for the legacy consumer but fails for the new consumer). We should add it as part of the fix, for better coverage: {code:java} @ParameterizedTest(name = TestInfoUtils.TestWithParameterizedQuorumAndGroupProtocolNames) @MethodSource(Array("getTestQuorumAndGroupProtocolParametersAll")) def testNoOffsetForPartitionExceptionOnPollZero(quorum: String, groupProtocol: String): Unit = { this.consumerConfig.setProperty(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "none") val consumer = createConsumer(configOverrides = this.consumerConfig) consumer.assign(List(tp).asJava) // continuous poll should eventually fail because there is no offset reset strategy set (fail only when resetting positions after coordinator is known) TestUtils.tryUntilNoAssertionError() { assertThrows(classOf[NoOffsetForPartitionException], () => consumer.poll(Duration.ZERO)) } } {code} Also this is covered in the unit test [KafkaConsumerTest.testMissingOffsetNoResetPolicy|https://github.com/apache/kafka/blob/ba19eedb90fc3a3efc97714e3ea125647338fc66/clients/src/test/java/org/apache/kafka/clients/consumer/KafkaConsumerTest.java#L915], that is currently enabled only for the LegacyConsumer. After fixing this issue we should be able to enable it for the new consumer too. The issue seems to be around calling poll with ZERO timeout, that even when continuously, the consumer is not able to initWithCommittedOffsetsIfNeeded, so the updateFetchPositions never makes it to [resetInitializingPositions|https://github.com/apache/kafka/blob/ba19eedb90fc3a3efc97714e3ea125647338fc66/clients/src/main/java/org/apache/kafka/clients/consumer/internals/AsyncKafkaConsumer.java#L1663], where the exception is thrown. -- This message was sent by Atlassian Jira (v8.20.10#820010)