Janus not able to connect to cassandra

[Bharat Dighe]

I am using cql driver.

I am getting below  while opening connection. The C* is running on the localhost and listening on port 9042.

Cassandra version is 3.11.3

Connection Parameters:

storage.backend=cql

storage.cassandra.read-consistency-level=LOCAL_QUORUM

storage.cassandra.write-consistency-level=LOCAL_QUORUM

storage.read-only=true

storage.hostname=localhost

storage.cassandra.keyspace=my_ks

query.fast-property=true

query.force-index=true

>>netstat -an|grep 9042

tcp        0      0 0.0.0.0:9042                0.0.0.0:*                   LISTEN

It works fine when I use thrift driver.

What I am missing? Following is the exception

java.lang.IllegalArgumentException: Could not instantiate implementation: org.janusgraph.diskstorage.cql.CQLStoreManager

        at org.janusgraph.util.system.ConfigurationUtil.instantiate(ConfigurationUtil.java:64) ~[janusgraph-core-0.4.0.jar:?]

        at org.janusgraph.diskstorage.Backend.getImplementationClass(Backend.java:440) ~[janusgraph-core-0.4.0.jar:?]

        at org.janusgraph.diskstorage.Backend.getStorageManager(Backend.java:411) ~[janusgraph-core-0.4.0.jar:?]

        at org.janusgraph.graphdb.configuration.builder.GraphDatabaseConfigurationBuilder.build(GraphDatabaseConfigurationBuilder.java:50) ~[janusgraph-core-0.4.0.jar:?]

        at org.janusgraph.core.JanusGraphFactory.open(JanusGraphFactory.java:161) ~[janusgraph-core-0.4.0.jar:?]

        at org.janusgraph.core.JanusGraphFactory.open(JanusGraphFactory.java:132) ~[janusgraph-core-0.4.0.jar:?]

        at org.janusgraph.core.JanusGraphFactory.open(JanusGraphFactory.java:112) ~[janusgraph-core-0.4.0.jar:?]

Caused by: java.lang.reflect.InvocationTargetException

        at sun.reflect.GeneratedConstructorAccessor25.newInstance(Unknown Source) ~[?:?]

        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_222]

        at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_222]

        at org.janusgraph.util.system.ConfigurationUtil.instantiate(ConfigurationUtil.java:58) ~[janusgraph-core-0.4.0.jar:?]

        ... 11 more

Caused by: com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: localhost/127.0.0.1:9042 (com.datastax.driver.core.exceptions.TransportException: [localhost/127.0.0.1:9042] Connection has been closed))

        at com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:268) ~[cassandra-driver-core-3.7.1.jar:?]

        at com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:107) ~[cassandra-driver-core-3.7.1.jar:?]

        at com.datastax.driver.core.Cluster$Manager.negotiateProtocolVersionAndConnect(Cluster.java:1652) ~[cassandra-driver-core-3.7.1.jar:?]

        at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:1571) ~[cassandra-driver-core-3.7.1.jar:?]

        at com.datastax.driver.core.Cluster.init(Cluster.java:208) ~[cassandra-driver-core-3.7.1.jar:?]

[akhilesh singh]

Can you disable thrift on Cassandra and then try

--
You received this message because you are subscribed to the Google Groups "JanusGraph users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to janusgraph-use...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/janusgraph-users/ab171f64-d3c8-4f16-a630-81de43891894%40googlegroups.com.

[Bharat Dighe]

Didnt help.

Could this be a driver 3.7.1 compatibility issue with cassandra 3.11.3?

Thanks

Bharat

To unsubscribe from this group and stop receiving emails from it, send an email to janusgra...@googlegroups.com.

[Florian Hockmann]

Not sure if that can cause your problem but you need to configure storage.cql.keyspace instead of storage.cassandra.keyspace if you're using CQL and the same applies to the consistency levels.

[Bharat Dighe]

Found the issue. It was due to inclusion of netty-transport-native-epoll via another application dependency. It seems cassandra core driver 3.7.1 does not like if this library is present in the classpath.

Thanks

Bharat