DataManager启动失败
启动过程中发现一个问题：slave1,slave2,slave3都是只启动了DataNode，而DataManager并没有启动：
[[email protected] hadoop-2.9.0]$ jps 2497 Jps 2052 DataNode [[email protected] hadoop-2.9.0]$ jps 2497 Jps 2052 DataNode [[email protected] hadoop-2.9.0]$ jps 2497 Jps 2052 DataNode
这里一个错误原因可以从： slaves各自的nodemanager日志查看。
查看slave1虚拟机的/opt/hadoop-2.9.0/logs/yarn-spark-nodemanager-slave1.log，错误信息为：
2018-06-30 08:58:06,824 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 slave1 doesn‘t sa
tisfy minimum allocations, Sending SHUTDOWN signal to the NodeManager.
at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.registerWithRM(NodeStatusUpdaterImpl.java:374)
at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.serviceStart(NodeStatusUpdaterImpl.java:252)
at org.apache.hadoop.service.AbstractService.start(AbstractService.java:194)
at org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:121)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceStart(NodeManager.java:454)
at org.apache.hadoop.service.AbstractService.start(AbstractService.java:194)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:837)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:897)
解决问题：
错误原因是hadoop dfs启动内存默认为1024G，而我的配置yarn-site.xml中分配内存资源为512，导致内存不足。
[[email protected] hadoop-2.9.0]$ grep "HEAP" /opt/hadoop-2.9.0/etc/hadoop/yarn-env.sh JAVA_HEAP_MAX=-Xmx1000m # For setting YARN specific HEAP sizes please use this # YARN_HEAPSIZE=1000 if [ "$YARN_HEAPSIZE" != "" ]; then JAVA_HEAP_MAX="-Xmx""$YARN_HEAPSIZE""m" # If not specified, the default value will be picked from either YARN_HEAPMAX # or JAVA_HEAP_MAX with YARN_HEAPMAX as the preferred option of the two. #export YARN_RESOURCEMANAGER_HEAPSIZE=1000 # If not specified, the default value will be picked from either YARN_HEAPMAX # or JAVA_HEAP_MAX with YARN_HEAPMAX as the preferred option of the two. #export YARN_TIMELINESERVER_HEAPSIZE=1000 # If not specified, the default value will be picked from either YARN_HEAPMAX # or JAVA_HEAP_MAX with YARN_HEAPMAX as the preferred option of the two. #export YARN_NODEMANAGER_HEAPSIZE=1000
解决方案，修改yarn-site.xml中的配置项：
<property>
<name>yarn.nodemanager.resource.memory-mb</name>
<value>2048</value>
</property>
备注：之前“yarn.nodemanager.resource.memory-mb”配置的是512，修改为2048或者更大，集群环境中肯能要上2G~8G左右。
重新启动hadoop，在slaves节点上验证是否slave启动成功：
[[email protected] hadoop-2.9.0]$ jps 2624 DataNode 2731 NodeManager 2875 Jps [[email protected] hadoop-2.9.0]$
原文地址：https://www.cnblogs.com/yy3b2007com/p/9247708.html
时间： 2024-07-30 10:59:42