we have ambari cluster version 2.6.0.x we noitce that free memory on master01 machine is 0 , and that because many of the following process ( from ps -ef | grep java ) ambari-+ 65369 65322 0 Jul06 ? 00:01:52 /usr/jdk64/jdk1.8.0_112/bin/java -Xmx1024m -Dhdp.version=2.6.0.3-8 -Djava.net.preferIPv4Stack=true -Dhdvar/log/hadoop/ambari-qa -Dhadoop.log.file=hadoop.log -Dhadoop.home.dir=/usr/hdp/2.6.0.3-8/hadoop -Dhadoop.id.str=ambari-qa -Dhadoop.root.logger=INFO,c.6.0.3-8/hadoop/lib/native/Linux-amd64-64:/usr/hdp/2.6.0.3-8/hadoop/lib/native -Dhadoop.policy.file=hadoop-policy.xml -Djava.net.preferIPv4Stack=true -.config.file=/usr/hdp/2.6.0.3-8/hive/conf/parquet-logging.properties -Dlog4j.configuration=beeline-log4j.properties -Dhadoop.security.logger=INFO,NullA/usr/hdp/2.6.0.3-8/hive/lib/hive-beeline-1.2.1000.2.6.0.3-8.jar org.apache.hive.beeline.BeeLine -u jdbc:hive2://master01.sys748.com:10000/;transportMo any idea why all this process ( around 350 process was opened ? ) , and take all memory on master01 machine [root@master01 ~]# ps -ef | grep java | wc -l
359
other way to show the process :
ps -ef | sed 's/-D[^ ]*//g;s/-X[^ ]*//g;s#^.*/bin/java##g;s/[^ ]*.jar//g;s/^[ ]*//g' |more
ambari-+ 50648 50646 0 Jul06 ? 00:00:00 -bash -c export PATH='/usr/sbin:/sbin:/usr/lib/ambari-server/*:/usr/sbin:/sbin:/usr/lib/ambari-server/
*:/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/var/lib/ambari-agent:/var/lib/ambari-agent:/bin/:/usr/bin/:/usr/lib/hive/bin
/:/usr/sbin/' ; ! beeline -u 'jdbc:hive2://master01.sys748.com:10000/;transportMode=binary' -e '' 2>&1| awk '{print}'|grep -i -e 'Connection refused'
-e 'Invalid URL'
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