Failed to connect to a Cassandra cluster's all nodes without default port


Hello everyone, when I try to connect to a Cassandra cluster which's port is not default, just like this 

StandardJanusGraph graph = (StandardJanusGraph)"storage.backend", "cql").
set("storage.hostname", ",,,").
but when I start it,
only one node's is correct, the others' port change to 9042, the default one. so I can only connect to one node.
I try to fix this, but it only useful when all nodes' port are the same.if different node has different will not work.
So I hope someone will have a good solution.

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