title: starting Cassandra AssertionError
body: <p>When i try to start Cassandra, i received an AssertionError about "durable_wrıtes". I tried to install different Cassandra versions but nothing changed. OS is Ubuntu 16.04</p>
  
  <pre><code>Exception (java.lang.AssertionError) encountered during startup: Cannot find column durable_wrıtes
  java.lang.AssertionError: Cannot find column durable_wrıtes
      at org.apache.cassandra.db.RowUpdateBuilder.add(RowUpdateBuilder.java:273)
      at org.apache.cassandra.schema.SchemaKeyspace.makeCreateKeyspaceMutation(SchemaKeyspace.java:394)
      at org.apache.cassandra.schema.SchemaKeyspace.makeCreateKeyspaceMutation(SchemaKeyspace.java:401)
      at org.apache.cassandra.schema.SchemaKeyspace.saveSystemKeyspacesSchema(SchemaKeyspace.java:267)
      at org.apache.cassandra.db.SystemKeyspace.finishStartup(SystemKeyspace.java:468)
      at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:333)
      at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:557)
      at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:685)
  ERROR 04:04:55 Exception encountered during startup
  java.lang.AssertionError: Cannot find column durable_wrıtes
      at org.apache.cassandra.db.RowUpdateBuilder.add(RowUpdateBuilder.java:273) ~[apache-cassandra-3.0.7.jar:3.0.7]
      at org.apache.cassandra.schema.SchemaKeyspace.makeCreateKeyspaceMutation(SchemaKeyspace.java:394) ~[apache-cassandra-3.0.7.jar:3.0.7]
      at org.apache.cassandra.schema.SchemaKeyspace.makeCreateKeyspaceMutation(SchemaKeyspace.java:401) ~[apache-cassandra-3.0.7.jar:3.0.7]
      at org.apache.cassandra.schema.SchemaKeyspace.saveSystemKeyspacesSchema(SchemaKeyspace.java:267) ~[apache-cassandra-3.0.7.jar:3.0.7]
      at org.apache.cassandra.db.SystemKeyspace.finishStartup(SystemKeyspace.java:468) ~[apache-cassandra-3.0.7.jar:3.0.7]
      at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:333) [apache-cassandra-3.0.7.jar:3.0.7]
      at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:557) [apache-cassandra-3.0.7.jar:3.0.7]
      at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:685) [apache-cassandra-3.0.7.jar:3.0.7]
  </code></pre>