Warnings Raised after Deploying a BDA CDH Cluster Spanning 45 Nodes And 3 Racks (Doc ID 2075843.1)

Last updated on NOVEMBER 13, 2015

Applies to:

Big Data Appliance Integrated Software - Version 4.2.0 and later
Linux x86-64

Symptoms

After a Mammoth BDA V4.2 install on a cluster with 40+ nodes, Cloudera Manager reports the following warnings:

Cluster <cluster-name> is running on at least 40 nodes, but all hosts are configured with the same rack. Configuring rack locality (via the hosts tab) is recommended for best performance.
hdfs: Java Heap size of namenode in Bytes Java Heap Size of namenode in Bytes is recommended to be at least 1GB for every million HDFS blocks. Suggested minimum value: <X>

 

Cause

Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms