Hello, I met some problems during an upgrade version, my source is Cassandra 2.0 and my target is Cassandra 2.0.2.
My cluster have 3 nodes in the same datacenter, and i will upgrade them one by one. So i Deploy the binaries of the new version, and configure my cassandra.yaml with the same informations as before. I also make an environnement file like this one (a copy of the old one): export PATH=$PATH:/produits/cassandra/install_cassandra/jre1.7.0_25/bin: /produits/cassandra/install_cassandra/jre1.7.0_25/lib: /produits/cassandra/install_cassandra/apache-cassandra-2.0.2/bin: /produits/cassandra/install_cassandra/apache-cassandra-2.0.2/lib: /produits/cassandra/install_opscenter/opscenter-3.2.0/bin: /produits/cassandra/install_opscenter/opscenter-3.2.0/agent: /usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin export JAVA_HOME=/produits/cassandra/install_cassandra/jre1.7.0_25 export CASSANDRA_HOME=/produits/cassandra/install_cassandra/apache-cassandra-2.0.2 export JVM_OPTS=-Dorg.xerial.snappy.tempdir=/produits/cassandra/snappy Nothing change in this 2 files except the new home for Cassandra, i keep the same DATA_FILE_DIRECTORIES,commitlog_directory and saved_caches_directory, same cluster name and same cassandra-topology.properties. I just have change my log4j.appender.R.File=/produits/cassandra/system_log.log in log4j-server.properties. So on the first node i used these commands: nodetool –h 10.250.176.128 disablegossip nodetool –h 10.250.176.128 disablethrift nodetool -h 10.250.176.128 snapshot nodetool -h 10.250.176.128 drain cassandra stop I also comment the num_tokens cause i use vnodes, and decomment initial_token and let a blank for this parameter. Next i load my new environement files, all variables seems correct but when i try to start the node i had these errors. [cassandra@s00vl9925761 conf]$ Error: Could not find or load main class org.apache.cassandra.service.CassandraDaemon I search on the net, and all forums which speak about this error tell me that i have problem with my environment variables. But my variables are all looking good, so i really need help on this. When i come back to the older version, cassandra always start without problems. Thanks.
