Bugs found by Fray
January 11, 2026 ยท View on GitHub
JDK
Lucene
- #13547 Flaky Test in TestMergeSchedulerExternal#testSubclassConcurrentMergeScheduler
- #13552 Test TestIndexWriterWithThreads#testIOExceptionDuringWriteSegmentWithThreadsOnlyOnce Failed
- #13571 DocumentsWriterDeleteQueue.getNextSequenceNumber assertion failure seqNo=9 vs maxSeqNo=8
- #13593 ConcurrentMergeScheduler may spawn more merge threads than specified
Kafka
- #17112 StreamThread shutdown calls completeShutdown only in CREATED state
- #17113 Flaky Test in GlobalStreamThreadTest#shouldThrowStreamsExceptionOnStartupIfExceptionOccurred
- #17114 DefaultStateUpdater::handleRuntimeException should update isRunning before calling
addToExceptionsAndFailedTasksThenClearUpdatingAndPausedTasks - #17162 DefaultTaskManagerTest may leak AwaitingRunnable thread
- #17354 StreamThread::setState race condition causes java.lang.RuntimeException: State mismatch PENDING_SHUTDOWN different from STARTING
- #17371 Flaky test in DefaultTaskExecutorTest.shouldUnassignTaskWhenRequired
- #17379 KafkaStreams: Unexpected state transition from ERROR to PENDING_SHUTDOWN
- #17394 Flaky test in DefaultTaskExecutorTest.shouldSetUncaughtStreamsException
- #17402 Test failure: DefaultStateUpdaterTest.shouldGetTasksFromRestoredActiveTasks expected: <2> but was: <3>
- #17929
awaitProcessableTasksis not safe in the presence of spurious wakeups. - #17946 Flaky test DefaultStateUpdaterTest::shouldResumeStandbyTask due to concurrency issue
- #18418 Flaky test in KafkaStreamsTest::shouldThrowOnCleanupWhileShuttingDownStreamClosedWithCloseOptionLeaveGroupFalse