我有一个在 Amazon EMR 上的 yarn 集群上运行的LLAP 服务。这是显示 llap 服务已打开的图像，它的名称是llap_service：
我已经将“hive.llap.daemon.service.hosts”设置为“@llap_service”，但是我在 hive 中的查询无法成功，日志是这样的：
2018-01-08 08:22:43,866 [INFO] [LlapScheduler] |tezplugins.LlapTaskSchedulerService|: Timeout monitor task not started. Timeout future state: false, #instances: 0
2018-01-08 08:22:43,866 [INFO] [TaskSchedulerEventHandlerThread] |tezplugins.LlapTaskSchedulerService|: PendingTasksInfo=numPriorityLevels=5. [p=38,c=2][p=41,c=2][p=44,c=1][p=50,c=2][p=89,c=22]. totalPendingTasks=29. delayedTaskQueueSize=0
2018-01-08 08:22:43,866 [INFO] [LlapScheduler] |tezplugins.LlapTaskSchedulerService|: Inadequate total resources before scheduling pending tasks. Signalling scheduler timeout monitor thread to start timer.
2018-01-08 08:22:43,866 [INFO] [TaskSchedulerEventHandlerThread] |tezplugins.LlapTaskSchedulerService|: Received allocateRequest. task=attempt_1515129349345_0057_1_08_000022_0, priority=89, capability=<memory:2048, vCores:1>, hosts=null
2018-01-08 08:22:43,866 [INFO] [LlapScheduler] |tezplugins.LlapTaskSchedulerService|: Timeout monitor task not started. Timeout future state: false, #instances: 0
2018-01-08 08:22:43,866 [INFO] [TaskSchedulerEventHandlerThread] |tezplugins.LlapTaskSchedulerService|: PendingTasksInfo=numPriorityLevels=5. [p=38,c=2][p=41,c=2][p=44,c=1][p=50,c=2][p=89,c=23]. totalPendingTasks=30. delayedTaskQueueSize=0
2018-01-08 08:22:43,866 [INFO] [LlapScheduler] |tezplugins.LlapTaskSchedulerService|: Inadequate total resources before scheduling pending tasks. Signalling scheduler timeout monitor thread to start timer.
2018-01-08 08:22:43,867 [INFO] [LlapScheduler] |tezplugins.LlapTaskSchedulerService|: Timeout monitor task not started. Timeout future state: false, #instances: 0
2018-01-08 08:22:50,987 [INFO] [LlapTaskSchedulerTimedLogThread] |tezplugins.LlapTaskSchedulerService|: Stats for current dag: NumPreemptedTasks=0, NumRequestedAllocations=30, NumRequestsWithlocation=4, NumLocalAllocations=0,NumNonLocalAllocations=0,NumTotalAllocations=0,NumRequestsWithoutLocation=26, NumRejectedTasks=0, NumCommFailures=0, NumDelayedAllocations=2, LocalityBasedAllocationsPerHost={}, NumAllocationsPerHost={}
2018-01-08 08:23:31,081 [INFO] [AMRM Callback Handler Thread] |rm.YarnTaskSchedulerService|: Allocated: <memory:0, vCores:0> Free: <memory:6477824, vCores:1> pendingRequests: 0 delayedContainers: 0 heartbeats: 51 lastPreemptionHeartbeat: 50
2018-01-08 08:23:42,334 [INFO] [LlapTaskSchedulerTimeoutMonitor] |tezplugins.LlapTaskSchedulerService$SchedulerTimeoutMonitor|: Reporting SERVICE_UNAVAILABLE error as no instances are running
2018-01-08 08:23:42,336 [WARN] [TaskSchedulerAppCallbackExecutor #0] |tez.Utils|: Error reported by TaskScheduler [[2:LLAP]][SERVICE_UNAVAILABLE] No LLAP Daemons are running, Failing dag: [SELECT d_placement.name AS `d_placem...DESC(Stage-1), dag_1515129349345_0057_1]
在没有 LLAP 的情况下，tez 上的 Hive 可以完美运行，有人能告诉我哪里错了吗？非常感谢。
