v4.15.44 not compatible with C* 4.0 RC1

Describe the bug

NoSQLBench v4.15.44 cannot establish the control connection with C* 4.0 RC1. Stacktrace below. I believe this is caused by the protocol changes in the new C* version and it will probably require a CQL driver upgrade in NoSQLBench. Specifically, it’s probably being affected by this issue https://datastax-oss.atlassian.net/browse/JAVA-2936, although setting protocol_version=V5 as a command-line param in nb didn’t help.

To Reproduce

1. Try to run any activity against C* 4.0 RC1.

What was Expected

Successful connection with C* and no startup failures.

Additional context

OS: Linux environment: k8s (GKE) version info: 4.15.44

Stacktrace

Caused by: com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: target-dc2-service/10.232.3.3:9042 (com.datastax.driver.core.exceptions.TransportException: [target-dc2-service/10.232.3.3:9042] Connection has been closed), target-dc2-service/10.232.8.4:9042 (com.datastax.driver.core.exceptions.TransportException: [target-dc2-service/10.232.8.4:9042] Connection has been closed), target-dc2-service/10.232.2.4:9042 (com.datastax.driver.core.exceptions.TransportException: [target-dc2-service/10.232.2.4:9042] Connection has been closed))
	at com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:259)
	at com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:98)
	at com.datastax.driver.core.Cluster$Manager.negotiateProtocolVersionAndConnect(Cluster.java:1926)
	at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:1839)
	at com.datastax.driver.core.Cluster.getMetadata(Cluster.java:475)
	at com.datastax.driver.core.DelegatingCluster.getMetadata(DelegatingCluster.java:88)
	at io.nosqlbench.activitytype.cql.statements.core.CQLSessionCache.createSession(CQLSessionCache.java:324)
	at io.nosqlbench.activitytype.cql.statements.core.CQLSessionCache.lambda$getSession$0(CQLSessionCache.java:58)
	at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1224)
	at io.nosqlbench.activitytype.cql.statements.core.CQLSessionCache.getSession(CQLSessionCache.java:58)
	at io.nosqlbench.activitytype.cql.core.CqlActivity.getSession(CqlActivity.java:132)
	at io.nosqlbench.activitytype.cql.core.CqlActivity.initActivity(CqlActivity.java:113)
	at io.nosqlbench.engine.core.lifecycle.ActivityExecutor.startActivity(ActivityExecutor.java:117)

[grighetto]

I have a patch for this issue https://github.com/nosqlbench/nosqlbench/pull/318 The cqld3 module wasn’t properly shaded and it was clashing with the old driver.

With the patch, I can connect to C* 4.0 RC1 with the driver=cqld3 param.

[jshook]

Thanks @grighetto ! I’m closing this one.