數據節點和節點管理器未以偽集群模式啟動（Apache Hadoop）

Question

數據節點和節點管理器未以偽集群模式（Apache Hadoop）啟動。

在日志文件中看到此錯誤：

***2017-08-22 17:15:08,403 ERROR org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl: Unexpected error starting NodeStatusUpdater
org.apache.hadoop.yarn.exceptions.YarnRuntimeException: Recieved SHUTDOWN signal from Resourcemanager ,Registration of NodeManager failed, Message from ResourceManager: NodeManager from  archit doesn't satisfy minimum allocations, Sending SHUTDOWN signal to the NodeManager.***

    at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.registerWithRM(NodeStatusUpdaterImpl.java:278)
    at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.serviceStart(NodeStatusUpdaterImpl.java:197)
    at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
    at org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:120)
    at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceStart(NodeManager.java:272)
    at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
    at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:496)
    at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:543)
2017-08-22 17:15:08,404 INFO org.apache.hadoop.service.AbstractService: Service org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl failed in state STARTED; cause: org.apache.hadoop.yarn.exceptions.YarnRuntimeException:

Answer 1

當在其上啟動節點管理器的節點沒有足夠的資源， yarn.scheduler.minimum-allocation-vcores和yarn.scheduler.minimum-allocation-mb時，會出現“ ResourceManager: NodeManager from archit doesn't satisfy minimum allocations ”錯誤。 yarn.scheduler.minimum-allocation-mb配置。

減少yarn.scheduler.minimum-allocation-vcores和yarn.scheduler.minimum-allocation-mb然后重新啟動yarn。