[ 
https://issues.apache.org/jira/browse/KAFKA-19280?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Matthias J. Sax updated KAFKA-19280:
------------------------------------
    Affects Version/s: 4.1.0

> NoSuchElementException in UnifiedLog.fetchLastStableOffsetMetadata
> ------------------------------------------------------------------
>
>                 Key: KAFKA-19280
>                 URL: https://issues.apache.org/jira/browse/KAFKA-19280
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 4.1.0
>            Reporter: Lucas Brutschy
>            Priority: Major
>
> In {{FETCH}} requests and {{TXN_OFFSET_COMMIT}} requests, on current trunk we 
> run into a race condition inside {{{}UnifiedLog{}}}:
>  
> TxnOffsetCommit:
>  
> {code:java}
> [2025-05-13 22:21:39,627] ERROR [GroupCoordinator id=7061] Operation 
> txn-commit-offset with 
> TxnOffsetCommitRequestData(transactionalId='stream-soak-test-f3787ccf-b34d-4215-b51a-6ebd15406537-3',
>  groupId='stream-soak-test', producerId=2001, producerEpoch=25732, 
> generationId=39, memberId='fD-cjsEQQQeTsn1poFtVAw', 
> groupInstanceId='ip-172-31-14-0.us-west-2.compute.internal-3', 
> topics=[TxnOffsetCommitRequestTopic(name='windowed-node-counts', 
> partitions=[TxnOffsetCommitRequestPartition(partitionIndex=2, 
> committedOffset=10144990, committedLeaderEpoch=-1, 
> committedMetadata='AgAAAZbLvT4a')]), 
> TxnOffsetCommitRequestTopic(name='logs.syslog', 
> partitions=[TxnOffsetCommitRequestPartition(partitionIndex=0, 
> committedOffset=794827, committedLeaderEpoch=0, 
> committedMetadata='AgAAAZbLvT9a')]), 
> TxnOffsetCommitRequestTopic(name='stream-soak-test-node-name-repartition', 
> partitions=[TxnOffsetCommitRequestPartition(partitionIndex=2, 
> committedOffset=852193, committedLeaderEpoch=0, 
> committedMetadata='AgAAAZbLvT6S')])]) hit an unexpected exception: 
> java.util.NoSuchElementException: No value present. 
> (org.apache.kafka.coordinator.group.GroupCoordinatorService)
> java.util.concurrent.CompletionException: java.util.NoSuchElementException: 
> No value present
>     at 
> java.base/java.util.concurrent.CompletableFuture.encodeRelay(CompletableFuture.java:368)
>  ~[?:?]
>     at 
> java.base/java.util.concurrent.CompletableFuture.completeRelay(CompletableFuture.java:377)
>  ~[?:?]
>     at 
> java.base/java.util.concurrent.CompletableFuture$UniRelay.tryFire(CompletableFuture.java:1097)
>  ~[?:?]
>     at 
> java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
>  ~[?:?]
>     at 
> java.base/java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:2162)
>  ~[?:?]
>     at 
> org.apache.kafka.coordinator.common.runtime.CoordinatorRuntime$CoordinatorWriteEvent.complete(CoordinatorRuntime.java:1439)
>  ~[kafka-coordinator-common-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.coordinator.common.runtime.CoordinatorRuntime$DeferredEventCollection.complete(CoordinatorRuntime.java:1184)
>  ~[kafka-coordinator-common-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.coordinator.common.runtime.CoordinatorRuntime$CoordinatorContext.failCurrentBatch(CoordinatorRuntime.java:844)
>  ~[kafka-coordinator-common-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.coordinator.common.runtime.CoordinatorRuntime$CoordinatorContext.flushCurrentBatch(CoordinatorRuntime.java:819)
>  ~[kafka-coordinator-common-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.coordinator.common.runtime.CoordinatorRuntime$CoordinatorContext.maybeFlushCurrentBatch(CoordinatorRuntime.java:832)
>  ~[kafka-coordinator-common-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.coordinator.common.runtime.CoordinatorRuntime$CoordinatorContext.append(CoordinatorRuntime.java:1077)
>  ~[kafka-coordinator-common-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.coordinator.common.runtime.CoordinatorRuntime$CoordinatorWriteEvent.lambda$run$0(CoordinatorRuntime.java:1395)
>  ~[kafka-coordinator-common-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.coordinator.common.runtime.CoordinatorRuntime.withActiveContextOrThrow(CoordinatorRuntime.java:2151)
>  [kafka-coordinator-common-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.coordinator.common.runtime.CoordinatorRuntime$CoordinatorWriteEvent.run(CoordinatorRuntime.java:1390)
>  [kafka-coordinator-common-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.coordinator.common.runtime.MultiThreadedEventProcessor$EventProcessorThread.handleEvents(MultiThreadedEventProcessor.java:147)
>  [kafka-coordinator-common-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.coordinator.common.runtime.MultiThreadedEventProcessor$EventProcessorThread.run(MultiThreadedEventProcessor.java:179)
>  [kafka-coordinator-common-4.1.0-c60c83aaba.jar:?]
> Caused by: java.util.NoSuchElementException: No value present
>     at java.base/java.util.Optional.get(Optional.java:143) ~[?:?]
>     at 
> org.apache.kafka.storage.internals.log.UnifiedLog.fetchLastStableOffsetMetadata(UnifiedLog.java:650)
>  ~[kafka-storage-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.storage.internals.log.UnifiedLog.fetchOffsetSnapshot(UnifiedLog.java:691)
>  ~[kafka-storage-4.1.0-c60c83aaba.jar:?]
>     at 
> kafka.cluster.Partition.$anonfun$fetchOffsetSnapshot$1(Partition.scala:1640) 
> ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at kafka.cluster.Partition.fetchOffsetSnapshot(Partition.scala:1637) 
> ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at 
> kafka.server.DelayedFetch.$anonfun$tryComplete$1(DelayedFetch.scala:86) 
> ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at 
> kafka.server.DelayedFetch.$anonfun$tryComplete$1$adapted(DelayedFetch.scala:79)
>  ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:619) 
> ~[scala-library-2.13.15.jar:?]
>     at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:617) 
> ~[scala-library-2.13.15.jar:?]
>     at scala.collection.AbstractIterable.foreach(Iterable.scala:935) 
> ~[scala-library-2.13.15.jar:?]
>     at kafka.server.DelayedFetch.tryComplete(DelayedFetch.scala:79) 
> ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.server.purgatory.DelayedOperation.safeTryComplete(DelayedOperation.java:137)
>  ~[kafka-server-common-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.server.purgatory.DelayedOperationPurgatory$Watchers.tryCompleteWatched(DelayedOperationPurgatory.java:335)
>  ~[kafka-server-common-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.server.purgatory.DelayedOperationPurgatory.checkAndComplete(DelayedOperationPurgatory.java:186)
>  ~[kafka-server-common-4.1.0-c60c83aaba.jar:?]
>     at 
> kafka.server.ReplicaManager.$anonfun$addCompletePurgatoryAction$2(ReplicaManager.scala:949)
>  ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at scala.collection.immutable.Map$Map1.foreach(Map.scala:278) 
> ~[scala-library-2.13.15.jar:?]
>     at 
> kafka.server.ReplicaManager.$anonfun$addCompletePurgatoryAction$1(ReplicaManager.scala:937)
>  ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at 
> kafka.coordinator.group.CoordinatorPartitionWriter$$anon$1.add(CoordinatorPartitionWriter.scala:67)
>  ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at 
> kafka.server.ReplicaManager.addCompletePurgatoryAction(ReplicaManager.scala:937)
>  ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at 
> kafka.server.ReplicaManager.appendRecordsToLeader(ReplicaManager.scala:693) 
> ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at 
> kafka.coordinator.group.CoordinatorPartitionWriter.append(CoordinatorPartitionWriter.scala:149)
>  ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.coordinator.common.runtime.CoordinatorRuntime$CoordinatorContext.flushCurrentBatch(CoordinatorRuntime.java:788)
>  ~[kafka-coordinator-common-4.1.0-c60c83aaba.jar:?]
>     ... 7 more{code}
>  
>  
>  
> Fetch:
>  
> {code:java}
> [2025-05-13 22:09:25,296] ERROR [KafkaApi-1107] Unexpected error handling 
> request RequestHeader(apiKey=FETCH, apiVersion=17, 
> clientId=broker-7061-fetcher-0, correlationId=1803880, headerVersion=2) – 
> FetchRequestData(clusterId=null, replicaId=-1, 
> replicaState=ReplicaState(replicaId=7061, replicaEpoch=32), maxWaitMs=500, 
> minBytes=1, maxBytes=10485760, isolationLevel=0, sessionId=2088504203, 
> sessionEpoch=62020, topics=[FetchTopic(topic='', 
> topicId=mv_Gf9ZRR2iI2Ipw7wD8Yw, partitions=[FetchPartition(partition=1, 
> currentLeaderEpoch=0, fetchOffset=626722, lastFetchedEpoch=0, 
> logStartOffset=0, partitionMaxBytes=1048576, 
> replicaDirectoryId=AAAAAAAAAAAAAAAAAAAAAA)]), FetchTopic(topic='', 
> topicId=gN7x55dzSdON4zENjOh6lg, partitions=[FetchPartition(partition=0, 
> currentLeaderEpoch=0, fetchOffset=795768, lastFetchedEpoch=0, 
> logStartOffset=793733, partitionMaxBytes=1048576, 
> replicaDirectoryId=AAAAAAAAAAAAAAAAAAAAAA)]), FetchTopic(topic='', 
> topicId=W7B2AdLbSfa6Yxc86A0q_A, partitions=[FetchPartition(partition=2, 
> currentLeaderEpoch=0, fetchOffset=709470, lastFetchedEpoch=0, 
> logStartOffset=0, partitionMaxBytes=1048576, 
> replicaDirectoryId=AAAAAAAAAAAAAAAAAAAAAA)]), FetchTopic(topic='', 
> topicId=kS6Qta42QU-VQUoT0oBKWw, partitions=[FetchPartition(partition=2, 
> currentLeaderEpoch=0, fetchOffset=795369, lastFetchedEpoch=0, 
> logStartOffset=794609, partitionMaxBytes=1048576, 
> replicaDirectoryId=AAAAAAAAAAAAAAAAAAAAAA)]), FetchTopic(topic='', 
> topicId=GFuXy3UOSaKBKv4y4CFJ5g, partitions=[FetchPartition(partition=1, 
> currentLeaderEpoch=0, fetchOffset=626722, lastFetchedEpoch=0, 
> logStartOffset=0, partitionMaxBytes=1048576, 
> replicaDirectoryId=AAAAAAAAAAAAAAAAAAAAAA)])], forgottenTopicsData=[], 
> rackId='') with context RequestContext(header=RequestHeader(apiKey=FETCH, 
> apiVersion=17, clientId=broker-7061-fetcher-0, correlationId=1803880, 
> headerVersion=2), connectionId='172.31.2.41:9092-172.31.13.202:48758-2-64', 
> clientAddress=/172.31.13.202, principal=User:ANONYMOUS, 
> listenerName=ListenerName(PLAINTEXT), securityProtocol=PLAINTEXT, 
> clientInformation=ClientInformation(softwareName=unknown, 
> softwareVersion=unknown), fromPrivilegedListener=true, 
> principalSerde=Optional[org.apache.kafka.common.security.authenticator.DefaultKafkaPrincipalBuilder@43ebd30b])
>  (kafka.server.KafkaApis)
> java.util.NoSuchElementException: No value present
>     at java.base/java.util.Optional.get(Optional.java:143) ~[?:?]
>     at 
> org.apache.kafka.storage.internals.log.UnifiedLog.fetchLastStableOffsetMetadata(UnifiedLog.java:651)
>  ~[kafka-storage-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.storage.internals.log.UnifiedLog.fetchOffsetSnapshot(UnifiedLog.java:691)
>  ~[kafka-storage-4.1.0-c60c83aaba.jar:?]
>     at 
> kafka.cluster.Partition.$anonfun$fetchOffsetSnapshot$1(Partition.scala:1640) 
> ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at kafka.cluster.Partition.fetchOffsetSnapshot(Partition.scala:1637) 
> ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at 
> kafka.server.DelayedFetch.$anonfun$tryComplete$1(DelayedFetch.scala:86) 
> ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at 
> kafka.server.DelayedFetch.$anonfun$tryComplete$1$adapted(DelayedFetch.scala:79)
>  ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at scala.collection.IterableOnceOps.foreach(IterableOnce.scala:619) 
> ~[scala-library-2.13.15.jar:?]
>     at scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:617) 
> ~[scala-library-2.13.15.jar:?]
>     at scala.collection.AbstractIterable.foreach(Iterable.scala:935) 
> ~[scala-library-2.13.15.jar:?]
>     at kafka.server.DelayedFetch.tryComplete(DelayedFetch.scala:79) 
> ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.server.purgatory.DelayedOperation.safeTryCompleteOrElse(DelayedOperation.java:123)
>  ~[kafka-server-common-4.1.0-c60c83aaba.jar:?]
>     at 
> org.apache.kafka.server.purgatory.DelayedOperationPurgatory.tryCompleteElseWatch(DelayedOperationPurgatory.java:148)
>  ~[kafka-server-common-4.1.0-c60c83aaba.jar:?]
>     at kafka.server.ReplicaManager.fetchMessages(ReplicaManager.scala:1768) 
> ~[kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at kafka.server.KafkaApis.handleFetchRequest(KafkaApis.scala:763) 
> [kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at kafka.server.KafkaApis.handle(KafkaApis.scala:169) 
> [kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at kafka.server.KafkaRequestHandler.run(KafkaRequestHandler.scala:158) 
> [kafka_2.13-4.1.0-c60c83aaba.jar:?]
>     at java.base/java.lang.Thread.run(Thread.java:840) [?:?]{code}
>  
>  
>  
> [~dajac] pointed out that a likely cause is the following code-line:
>  
> {code:java}
> if (firstUnstableOffsetMetadata.isPresent() && 
> firstUnstableOffsetMetadata.get().messageOffset < 
> highWatermarkMetadata.messageOffset) {{code}
>  
> Which is not safe since `firstUnstableOffsetMetadata` is volatile.
>  
> The line was introduced in 
> [https://github.com/apache/kafka/commit/759fbbba8b977206ad189172f429acb97e98a798]
> cc [~mimaison] 
>  



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