Cassandra datastax java driver ,can not connect to server "No handler set for stream" -

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enter image description here

if create new project .

cluster = cluster.builder().addcontactpoint("127.0.0.1").build();

this code works.

but if take jars project , migrate jars own project .the code above doesn't work , says:

13/07/01 16:27:16 error core.connection: [/127.0.0.1-1] no handler set stream 1 (this bug, either of driver or of cassandra, should report it) com.datastax.driver.core.exceptions.nohostavailableexception: host(s) tried query failed (tried: [/127.0.0.1])

what version of cassandra running? have enabled native protocol in cassandra.yaml?

in cassandra 1.2.0-1.2.4 native protocol disabled default, in 1.2.5+ it's on default.

see https://github.com/apache/cassandra/blob/cassandra-1.2.5/conf/cassandra.yaml#l335

that's common reason i've seen not being able connect driver.


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