question Namenode Heap Size usage is > 80% on daily basis in Support Questions

Namenode Heap Size usage is > 80% on daily basis

Koffi — Fri, 04 Sep 2020 15:24:10 GMT

Using:
HDP 3.0.1
HDFS 3.1.0

NAMENODE HEAP: 84.8% 3.3 GB / 4.0 GB
DISK USAGE (DFS USED): 71.20% 63.9 TB / 89.7 TB
DISK USAGE (NON DFS USED): 0.74% 676.2 GB / 89.7 TB
DISK REMAINING: 28.06% 25.2 TB / 89.7 TB
Block Size : 128 MB

Any idea how to solve to reduce reduce the name node heap size usage?

Thank you

Re: Namenode Heap Size usage is > 80% on daily basis

vsundaram — Wed, 30 Sep 2020 17:30:00 GMT

@Koffi Heap plays a vital role on overall HDFS performance. So you might need to confirm the usage is legitimate and you have adequate heap configured for Name node and Data nodes. Please refer below documentation.

https://docs.cloudera.com/HDPDocuments/HDP2/HDP-2.6.5/bk_command-line-installation/content/configuring-namenode-heap-size.html