faced with a problem, we have cluster of 5 nodes after restart dse trying to start without success the last record in system.log is below... Tried with heap and 48 and 64, node has 128GB. Three of them started but these two cannot, no error in the log just that record.
INFO [main] 2017-05-16 21:16:27,507 CassandraDaemon.java:487 - JVM Arguments: [-Ddse.server_process, -XX:+AlwaysPreTouch, -Dcassandra.disable_auth_caches_remote_configuration=false, -Dcassandra.force_default_indexing_page_size=false, -Dcassandra.join_ring=true, -Dcassandra.load_ring_state=true, -Dcassandra.write_survey=false, -XX:CMSInitiatingOccupancyFraction=75, -XX:CMSWaitDuration=10000, -ea, -XX:G1RSetUpdatingPauseTimePercent=5, -XX:+HeapDumpOnOutOfMemoryError, -Xms16G, -Djava.net.preferIPv4Stack=true, -XX:MaxGCPauseMillis=500, -Xmx16G, -XX:MaxTenuringThreshold=1, -Xss256k, -XX:+PerfDisableSharedMem, -XX:+ResizeTLAB, -XX:StringTableSize=1000003, -XX:SurvivorRatio=8, -XX:ThreadPriorityPolicy=42, -XX:+UseThreadPriorities, -XX:+UseTLAB, -XX:+UseG1GC, -Dcom.sun.management.jmxremote.authenticate=false, -Dcassandra.jmx.local.port=7199, -XX:CompileCommandFile=/etc/dse/cassandra/hotspot_compiler, -javaagent:/usr/share/dse/cassandra/lib/jamm-0.3.0.jar, -Djava.library.path=/usr/share/dse/hadoop2-client/lib/native:/usr/share/dse/cassandra/lib/sigar-bin:/usr/share/dse/hadoop2-client/lib/native:/usr/share/dse/cassandra/lib/sigar-bin:, -Dguice_include_stack_traces=OFF, -Ddse.system_memory_in_mb=128658, -Dcassandra.config.loader=com.datastax.bdp.config.DseConfigurationLoader, -Dguice_include_stack_traces=OFF, -Ddse.system_memory_in_mb=128658, -Dcassandra.config.loader=com.datastax.bdp.config.DseConfigurationLoader, -Dlogback.configurationFile=logback.xml, -Dcassandra.logdir=/var/log/cassandra, -Dcassandra.storagedir=/usr/share/dse/data, -Dcassandra-pidfile=/var/run/dse/dse.pid, -Dgraph-enabled=true, -XX:HeapDumpPath=/var/lib/cassandra/java_1494958565.hprof, -XX:ErrorFile=/var/lib/cassandra/hs_err_1494958565.log, -Dguice_include_stack_traces=OFF, -Ddse.system_memory_in_mb=128658, -Dcassandra.config.loader=com.datastax.bdp.config