linux - Exception encountered during startup: Unknown commitlog version 6 -


cannot start cassandra in datastax enterprise (single node scenario)

runing $ sudo service dse start get:

starting dse daemon : dse dse daemon starting cassandra enabled (edit /etc/default/dse enable)

running $ nodetool status

    failed connect '127.0.0.1:7199': connection refused (connection refused)

from output.log:

error 08:03:24,900 exception encountered during startup java.lang.illegalstateexception: unknown commitlog version 6     @ org.apache.cassandra.db.commitlog.commitlogdescriptor.getmessagingversion(commitlogdescriptor.java:80)     @ org.apache.cassandra.db.commitlog.commitlogreplayer.recover(commitlogreplayer.java:182)     @ org.apache.cassandra.db.commitlog.commitlogreplayer.recover(commitlogreplayer.java:95)     @ org.apache.cassandra.db.commitlog.commitlog.recover(commitlog.java:151)     @ org.apache.cassandra.db.commitlog.commitlog.recover(commitlog.java:131)     @ org.apache.cassandra.service.cassandradaemon.setup(cassandradaemon.java:336)     @ com.datastax.bdp.server.dsedaemon.setup(dsedaemon.java:394)     @ org.apache.cassandra.service.cassandradaemon.activate(cassandradaemon.java:496)     @ com.datastax.bdp.server.dsedaemon.main(dsedaemon.java:574) java.lang.illegalstateexception: unknown commitlog version 6     @ org.apache.cassandra.db.commitlog.commitlogdescriptor.getmessagingversion(commitlogdescriptor.java:80)     @ org.apache.cassandra.db.commitlog.commitlogreplayer.recover(commitlogreplayer.java:182)     @ org.apache.cassandra.db.commitlog.commitlogreplayer.recover(commitlogreplayer.java:95)     @ org.apache.cassandra.db.commitlog.commitlog.recover(commitlog.java:151)     @ org.apache.cassandra.db.commitlog.commitlog.recover(commitlog.java:131)     @ org.apache.cassandra.service.cassandradaemon.setup(cassandradaemon.java:336)     @ com.datastax.bdp.server.dsedaemon.setup(dsedaemon.java:394)     @ org.apache.cassandra.service.cassandradaemon.activate(cassandradaemon.java:496)     @ com.datastax.bdp.server.dsedaemon.main(dsedaemon.java:574) exception encountered during startup: unknown commitlog version 6  info 08:03:24,915 dse shutting down...

what can ? suggestion wellcome


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