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Koffi
Koffi
Gold ⭐️
September 4, 2020
Solved

Namenode Heap Size usage is > 80% on daily basis

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

vsundaram
vsundaramAnswer
Gold ⭐️
September 30, 2020

@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

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1 reply

vsundaram
Gold ⭐️
vsundaramAnswer
Gold ⭐️
September 30, 2020

@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

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