Support Questions
Find answers, ask questions, and share your expertise
Announcements
Alert: Welcome to the Unified Cloudera Community. Former HCC members be sure to read and learn how to activate your account here.

Hadoop process swap memory

Hadoop process swap memory

Explorer

Some of the Hadoop processes like YarnChild, DataNode, NodeManager are slightly using swap memory (10MB),  there is enough memory available (usage is only 20GB of 500GB, buff/cache 450GB), enough heap available for these processes.

 

CentOS 7, CDH enterprise 5.14.0,

RAM 500GB

vm.swappiness=1 

 

When we run

 

echo 3 > /proc/sys/vm/drop_caches

 

its not swapping any more, again started swapping when buff/cache reached around 450GB

 

any suggestion? thanks