CODEWITHSUNDEEP
hadoopvirtualboxcluster-computingheap-memorynamenode
mjbsgll
mjbsgll

Reputation: 742

Hadoop: Why I got "Max Non Heap Memory is -1 B." message in Namenode Information Web? What it does mean?

I have a cluster to use Hadoop 2.6.5 (one master that works as namenode and datanode, and two slaves) that I made using VirtualBox (easch node has Xubuntu 16.04 installed).

A priori, the installation is right because I ran a wordcount example and it was OK.

In master:50070 (where I see the namenode information), I get this:

"Max Non Heap Memory is -1 B."

Do you know what does it mean? I couldn't find the answer, and I want to check it out because after running wordcount I tried to run my own program and it was not succesfull, in despite of it run OK in my single node installation of Hadoop.

I hope to be clear, please let me know if you need more information.

Thank you!

Upvotes: 2

Views: 796

Answers (1)

Santiago Troitiño Cristancho
Santiago Troitiño Cristancho

Reputation: 54

Even though I haven't used Hadoop that much, when I go to the Web UI I get the same message "Max Non Heap Memory is -1 B.", as far as I know that only means that the memory usage is undefined.

Link to source of my answer

Upvotes: 1

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