title: Could not read commit log descriptor in file
body: <p>I started to use cassandra 3.7 and always I have problems with the commitlog. When the pc unexpected finished by a power outage for example the cassandra service doesn't  restart. I try to start for the command line, but always the error <code>cassandra could not read commit log descriptor in file</code> appears.</p>
  
  <p>I have to delete all the commit logs to start the cassandra service. The problem is that I lose a lot of data. I tried to increment the replication factor to 3, but is the same. </p>
  
  <p>What I can  do to decrease amount of lost data?</p>
  
  <p>pd: I only one pc to use cassandra database, it is not possible to add more pcs.</p>