Support Questions

sinha_pranshu · ‎02-15-2016

Error starting NodeManager

java.lang.NullPointerException

at org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recoverContainer(ContainerManagerImpl.java:289)

at org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover(ContainerManagerImpl.java:252)

at org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.serviceInit(ContainerManagerImpl.java:235)

at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)

at org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:107)

at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:250)

at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)

at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:445)

at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:492)

nsabharwal · ‎02-15-2016

Login to datanodes or nodemanager node

cd /var/log/hadoop/hdfs

ls -lrt

look into the last log

for example: hadoop-hdfs-datanode-nodename.log

This log will give you the details. It can be related to the memory

sinha_pranshu · ‎02-16-2016

Yes. it is prod environment.

nsabharwal · ‎02-16-2016

I don't recommend doing anything like this in prod .

Please open a support ticket and have someone from support to look into this.

Yarn went down on my cluster. I restarted the service but it didn't work. Does it have any thing to do with housekeeping on Cluster ?