tez throws＆＃34;没有LLAP守护进程正在运行＆＃34;错误

Question

我在Amazon EMR上的纱线群集上运行 LLAP服务。 这是显示llap服务已启用的图像，其名称为 llap_service ：

我已经设置了＆＃34; hive.llap.daemon.service.hosts＆＃34;到＆＃34; @ llap_service＆＃34;， 但我在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]

Hive on tez在没有LLAP的情况下工作得很好，任何人都可以告诉我哪里出错了吗？非常感谢。

Answer 1

你需要从日志中找出为什么LLAP恶魔无法启动。来自RM UI＆gt;滑块llap应用＆gt;容器日志，您可能会看到类似这样的内容

＆＃34; LLAP服务主机以＆＃39; @＆＃39;但是没有设置hive.zookeeper.quorum。必须设置hive.zookeeper.quorum。您需要在hive-site.xml中添加以下属性＆＃34;

<property>
    <name>hive.zookeeper.quorum</name>
    <value><hostname1>:2181,<hostname2>:2181,[...]</value>
</property>

并重新生成滑块llap yarn app。

这blog post帮了很多忙！