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Swap Memory used

Question asked by mohi on Nov 25, 2015
Latest reply on Dec 3, 2015 by mufeed
Hi,
We have 9 nodes cluster on MapR version  4.1.0.31175.GA . The swappiness is set to 0 in all the nodes. But only one node is using swap memory continuously. Is it  normal, or I am missing something.

    bash-4.1$ cat /proc/sys/vm/swappiness
    0
    bash-4.1$ vmstat 3 100
    procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----
     r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
     2  0 3726088 16006528 751092 42723200    0    0    17    55    0    0  2  0 98  0  0
     0  0 3726088 16007388 751092 42723204    0    0     0    11 1733 2752  0  0 100  0  0
     2  0 3726088 15986948 751092 42723212    0    0     0   208 5036 7511  1  1 98  0  0
     0  0 3726088 16003008 751092 42723212    0    0     0    60 2399 3070  0  0 99  0  0
    
    bash-4.1$ ls -l /opt/mapr/roles/
    total 0
    -rw-r--r-- 1 root root 0 Mar 26  2015 cldb
    -rw-r--r-- 1 root root 0 Jul  5 23:59 drill-bits
    -rw-r--r-- 1 root root 0 Mar 26  2015 fileserver
    -rw-r--r-- 1 root root 0 Jan 29  2015 hbinternal
    -rw-r--r-- 1 root root 0 Jan 29  2015 hbregionserver
    -rw-r--r-- 1 root root 0 Mar 26  2015 nfs
    -rw-r--r-- 1 root root 0 Mar 26  2015 nodemanager
    -rw-r--r-- 1 root root 0 Sep  2 21:38 spark-historyserver
    -rw-r--r-- 1 root root 0 Sep  2 21:38 spark-master
    -rw-r--r-- 1 root root 0 Mar 26  2015 zookeeper

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