question Re: how to change the NodeManager Java heap size in Archives of Support Questions (Read Only)

how to change the NodeManager Java heap size

mike_bronson7 — Fri, 15 Sep 2017 19:39:35 GMT

how to change the NodeManager Java heap size value , this value cant change from the ambari GUI ( value is static ), how to enable in order to change it

I need to change this parameter according to the solution - https://community.hortonworks.com/content/supportkb/49606/gc-overhead-limit-exceeded.html

we have a problem to start the nodemanager on the worker machine

example from the log on worker machine:

FATAL nodemanager.NodeManager (NodeManager.java:initAndStartNodeManager(549)) - Error starting NodeManager java.lang.OutOfMemoryError: GC overhead limit exceeded at org.fusesource.leveldbjni.internal.NativeIterator.key(NativeIterator.java:171) at org.fusesource.leveldbjni.internal.JniDBIterator.peekNext(JniDBIterator.java:87) at org.apache.hadoop.yarn.server.utils.LeveldbIterator.peekNext(LeveldbIterator.java:137) at org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.loadContainersState(NMLeveldbStateStoreService.java:169) at org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover(ContainerManagerImpl.java:262) at org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.serviceInit(ContainerManagerImpl.java:246) 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:291) at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:546) at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:594) 2017-09-15 11:19:27,456 INFO util.ExitUtil (ExitUtil.java:halt(147)) - Halt with status -1 Message: HaltException

Re: how to change the NodeManager Java heap size

jsensharma — Fri, 15 Sep 2017 19:49:31 GMT

@uri ben-ari

The NodeManager Heap mentioned in your "capture.jpg" screen shot is Disabled because you are Searching it in the "Filter" remove the search text and select the current "Config" version, Then you will see it enabled And Do not forget to Login As "Admin User"

Or else try this:

Ambari UI --> YARN --> Configs --> Advanced

You will see "NodeManager" bar there expand it and then edit the

"NodeManager Java heap size"

Save the changes and then restart affected components.

Re: how to change the NodeManager Java heap size

jsensharma — Fri, 15 Sep 2017 19:55:11 GMT

@uri ben-ari

If the button is still disabled to change the NodeManger Heap then please make sure that you have logged in with correct user who has access to change to configuration . (not as Read Only User).

Please see : https://docs.hortonworks.com/HDPDocuments/Ambari-2.5.1.0/bk_ambari-administration/content/cluster_roles.html

Re: how to change the NodeManager Java heap size

mike_bronson7 — Fri, 15 Sep 2017 20:00:02 GMT

I have access to ambari GUI as admin admin

Re: how to change the NodeManager Java heap size

mike_bronson7 — Fri, 15 Sep 2017 20:07:38 GMT

is it possible to change it from CLI or API

Re: how to change the NodeManager Java heap size

mike_bronson7 — Fri, 15 Sep 2017 20:08:37 GMT

just to remined I need to change this value on worker machine

Re: how to change the NodeManager Java heap size

mike_bronson7 — Fri, 15 Sep 2017 20:18:23 GMT

I succeeded to change it but still nodemanager cant start