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  1. Cassandra
  2. CASSANDRA-16091

rpc server gets wrongly initialized with rpc_enabled:false

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    Description

      After upgrading to Cassandra 3.11.8, Cassandra no longer starts. An exception is thrown:

       java.lang.RuntimeException: Client SSL is not supported for non-blocking sockets (hsha). Please remove client ssl from the configuration.
      	at org.apache.cassandra.thrift.THsHaDisruptorServer$Factory.buildTServer(THsHaDisruptorServer.java:74)
      	at org.apache.cassandra.thrift.TServerCustomFactory.buildTServer(TServerCustomFactory.java:55)
      	at org.apache.cassandra.thrift.ThriftServer$ThriftServerThread.<init>(ThriftServer.java:128)
      	at org.apache.cassandra.thrift.ThriftServer.start(ThriftServer.java:55)
      	at org.apache.cassandra.service.CassandraDaemon.startNativeTransport(CassandraDaemon.java:713)
      	at org.apache.cassandra.service.CassandraDaemon.start(CassandraDaemon.java:538)
      	at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:643)
      	at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:768)
      

      No configuration changed between 3.11.7 and 3.11.8. rpc_enabled is false in both versions.

      I created this Jira issue because clearly something changed between 3.11.7 and 3.11.8. Maybe intentional, maybe not. Changing `rpc_server_type` (which is not clearly documented to be about Thrift only) from `hsha` to `sync` does resolve the issue, as expected, but this does seem like a regression, hence the Jira issue.

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              dcapwell David Capwell
              tvdw Tom van der Woerdt
              David Capwell
              David Capwell
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