Hi - I am not sure if the java process is the cause:
[centos@fra1uai01-a /]$ ps -aux | less | grep dremio
dremio 5441 31.9 11.7 6195872 943140 ? Sl 07:01 0:22 /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.171-8.b10.el7_5.x86_64/jre/bin/java -Djava.util.logging.config.class=org.slf4j.bridge.SLF4JBridgeHandler -Djava.library.path=/opt/dremio/lib -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:/var/log/dremio/server.gc -Ddremio.log.path=/var/log/dremio -Xmx4096m -XX:MaxDirectMemorySize=8192m -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/var/log/dremio -cp /etc/dremio:/opt/dremio/jars/:/opt/dremio/jars/ext/:/opt/dremio/jars/3rdparty/ com.dremio.dac.daemon.DremioDaemon dremio start*
centos 6564 0.0 0.0 112704 968 pts/0 S+ 07:02 0:00 grep --color=auto dremio
There is only a single stand-alone Centos host for now.