The exceptions related to queryNames are inconsistently handled in NodeProbe.java

 private static Multimap<String, String> getJmxThreadPools(MBeanServerConnection mbeanServerConn)
{
 try        
{            
   Multimap<String, String> threadPools = HashMultimap.create();
   Set<ObjectName> threadPoolObjectNames = mbeanServerConn.queryNames(                    new ObjectName("org.apache.cassandra.metrics:type=ThreadPools,*"),                    null);
      ...
  }catch (MalformedObjectNameException e) {
          throw new RuntimeException("Bad query to JMX server: ", e);        
  }catch (IOException e)        
{         throw new RuntimeException("Error getting threadpool names from JMX", e);        } 
   

 public ColumnFamilyStoreMBean getCfsProxy(String ks, String cf)
{
  ...
try{
     Set<ObjectName> beans = mbeanServerConn.queryNames(                    new ObjectName("org.apache.cassandra.db:type=*" + type +",keyspace=" + ks + ",columnfamily=" + cf), null);
     ...
}catch (MalformedObjectNameException mone)        { 
     System.err.println("ColumnFamilyStore for " + ks + "/" + cf + " not found.");            System.exit(1);        
}catch (IOException e){
     System.err.println("ColumnFamilyStore for " + ks + "/" + cf + " not found: " + e);            System.exit(1);        }

   

private List<Entry<String, ColumnFamilyStoreMBean>> getCFSMBeans(MBeanServerConnection mbeanServerConn, String type)            throws MalformedObjectNameException, IOException
{
   ...
    ObjectName query = new ObjectName("org.apache.cassandra.db:type=" + type +",*");        Set<ObjectName> cfObjects = mbeanServerConn.queryNames(query, null);
  ...
}