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Yarn available memory

Hello,

In Ambari main page, I noticed that it is writtent that Yarn only have 7G RAM available :

5135-yarn7g.png

But I have a 4 nodes cluster with at least 11.5G Ram available

5134-yarn3.png

Here is my Yarn configurations :

5136-yarn.png

5137-yarn2.png

Why Yarn doesn't have 28G RAM available ?

Regards.

1 ACCEPTED SOLUTION

Rising Star

@Arthur GREVIN it appears you only have one nodemanager deployed on those nodes. It is allocating 7 GB from that single node and that is why it is showing only that. You would need to deploy nodemanagers on the other 3 existing nodes.

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2 REPLIES 2

Rising Star

@Arthur GREVIN it appears you only have one nodemanager deployed on those nodes. It is allocating 7 GB from that single node and that is why it is showing only that. You would need to deploy nodemanagers on the other 3 existing nodes.

what this widget is showing is from this configuration "Memory Node " which you have set as 7 gb. That is the only usable memory which can be allocated to Yarn containers in total. You can increase up to 11 gb. Hope I got your question correctly.