Re: Janus not able to connect to cassandra

Bharat Dighe <bdi...@...>

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.


On Friday, September 27, 2019 at 12:53:23 AM UTC-7, Florian Hockmann wrote:
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.

Am Donnerstag, 26. September 2019 20:35:44 UTC+2 schrieb Bharat Dighe:
Didnt help.

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


On Wednesday, September 25, 2019 at 7:28:57 PM UTC-7, akhilesh singh wrote:
Can you disable thrift on Cassandra and then try

On Thu 26 Sep, 2019, 4:28 AM Bharat Dighe, <b...@...> wrote:
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:

>>netstat -an|grep 9042
tcp        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( ~[janusgraph-core-0.4.0.jar:?]
        at org.janusgraph.diskstorage.Backend.getImplementationClass( ~[janusgraph-core-0.4.0.jar:?]
        at org.janusgraph.diskstorage.Backend.getStorageManager( ~[janusgraph-core-0.4.0.jar:?]
        at ~[janusgraph-core-0.4.0.jar:?]
        at ~[janusgraph-core-0.4.0.jar:?]
        at ~[janusgraph-core-0.4.0.jar:?]
        at ~[janusgraph-core-0.4.0.jar:?]
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.GeneratedConstructorAccessor25.newInstance(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance( ~[?:1.8.0_222]
        at java.lang.reflect.Constructor.newInstance( ~[?:1.8.0_222]
        at org.janusgraph.util.system.ConfigurationUtil.instantiate( ~[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/ (com.datastax.driver.core.exceptions.TransportException: [localhost/] Connection has been closed))
        at com.datastax.driver.core.ControlConnection.reconnectInternal( ~[cassandra-driver-core-3.7.1.jar:?]
        at com.datastax.driver.core.ControlConnection.connect( ~[cassandra-driver-core-3.7.1.jar:?]
        at com.datastax.driver.core.Cluster$Manager.negotiateProtocolVersionAndConnect( ~[cassandra-driver-core-3.7.1.jar:?]
        at com.datastax.driver.core.Cluster$Manager.init( ~[cassandra-driver-core-3.7.1.jar:?]
        at com.datastax.driver.core.Cluster.init( ~[cassandra-driver-core-3.7.1.jar:?]

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