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

Last updated on NOVEMBER 08, 2022

Applies to:

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


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

Cluster <CLUSTERNAME> 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>

 Where "X" equals some value in bytes (i.e. 16620978176).


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