Cassandra is running as root [root@storage5 ~]# ps aux | grep java > root 1893 42.0 24.0 7630664 3904000 ? Sl 10:43 60:01 java -ea > -javaagent:/mydb/cassandra/bin/../lib/jamm-0.2.5.jar > -XX:+CMSClassUnloadingEnabled -XX:+UseThreadPriorities > -XX:ThreadPriorityPolicy=42 -Xms3959M -Xmx3959M -Xmn400M > -XX:+HeapDumpOnOutOfMemoryError -Xss256k -XX:StringTableSize=1000003 > -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled > -XX:SurvivorRatio=8 -XX:MaxTenuringThreshold=1 > -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly > -XX:+UseTLAB -XX:+UseCondCardMark -Djava.net.preferIPv4Stack=true > -Dcom.sun.management.jmxremote.port=7199 > -Dcom.sun.management.jmxremote.ssl=false > -Dcom.sun.management.jmxremote.authenticate=false > -Dlog4j.configuration=log4j-server.properties > -Dlog4j.defaultInitOverride=true -Dcassandra-pidfile=/var/run/cassandra.pid > -cp > /mydb/cassandra/bin/../conf:/mydb/cassandra/bin/../build/classes/main:/mydb/cassandra/bin/../build/classes/thrift:/mydb/cassandra/bin/../lib/antlr-3.2.jar:/mydb/cassandra/bin/../lib/apache-cassandra-2.0.7.jar:/mydb/cassandra/bin/../lib/apache-cassandra-clientutil-2.0.7.jar:/mydb/cassandra/bin/../lib/apache-cassandra-thrift-2.0.7.jar:/mydb/cassandra/bin/../lib/commons-cli-1.1.jar:/mydb/cassandra/bin/../lib/commons-codec-1.2.jar:/mydb/cassandra/bin/../lib/commons-lang3-3.1.jar:/mydb/cassandra/bin/../lib/compress-lzf-0.8.4.jar:/mydb/cassandra/bin/../lib/concurrentlinkedhashmap-lru-1.3.jar:/mydb/cassandra/bin/../lib/disruptor-3.0.1.jar:/mydb/cassandra/bin/../lib/guava-15.0.jar:/mydb/cassandra/bin/../lib/high-scale-lib-1.1.2.jar:/mydb/cassandra/bin/../lib/jackson-core-asl-1.9.2.jar:/mydb/cassandra/bin/../lib/jackson-mapper-asl-1.9.2.jar:/mydb/cassandra/bin/../lib/jamm-0.2.5.jar:/mydb/cassandra/bin/../lib/jbcrypt-0.3m.jar:/mydb/cassandra/bin/../lib/jline-1.0.jar:/mydb/cassandra/bin/../lib/json-simple-1.1.jar:/mydb/cassandra/bin/../lib/libthrift-0.9.1.jar:/mydb/cassandra/bin/../lib/log4j-1.2.16.jar:/mydb/cassandra/bin/../lib/lz4-1.2.0.jar:/mydb/cassandra/bin/../lib/metrics-core-2.2.0.jar:/mydb/cassandra/bin/../lib/netty-3.6.6.Final.jar:/mydb/cassandra/bin/../lib/reporter-config-2.1.0.jar:/mydb/cassandra/bin/../lib/servlet-api-2.5-20081211.jar:/mydb/cassandra/bin/../lib/slf4j-api-1.7.2.jar:/mydb/cassandra/bin/../lib/slf4j-log4j12-1.7.2.jar:/mydb/cassandra/bin/../lib/snakeyaml-1.11.jar:/mydb/cassandra/bin/../lib/snappy-java-1.0.5.jar:/mydb/cassandra/bin/../lib/snaptree-0.1.jar:/mydb/cassandra/bin/../lib/super-csv-2.1.0.jar:/mydb/cassandra/bin/../lib/thrift-server-0.3.3.jar > org.apache.cassandra.service.CassandraDaemon >
On Mon, May 5, 2014 at 1:02 PM, Philip Persad <philip.per...@gmail.com>wrote: > Have you tried running "ulimit -a" as the Cassandra user instead of as > root? It is possible that your configured a high file limit for root but > not for the user running the Cassandra process. > > > On Sun, May 4, 2014 at 6:07 PM, Yatong Zhang <bluefl...@gmail.com> wrote: > >> [root@storage5 ~]# lsof -n | grep java | wc -l >>> 5103 >>> [root@storage5 ~]# lsof | wc -l >>> 6567 >> >> >> It's mentioned in previous mail:) >> >> >> On Mon, May 5, 2014 at 9:03 AM, nash <nas...@gmail.com> wrote: >> >>> The lsof command or /proc can tell you how many open files it has. How >>> many is it? >>> >>> --nash >>> >> >> >
