It looks like you need to do 'ant realclean' first. On Thu, Dec 3, 2020 at 2:28 PM Technical Shil <technicalblog.s...@gmail.com> wrote: > > I am using java8. I am getting the following error when executing 'ant' > command. > > > build-test: > > [javac] Compiling 58 source files to > /Users/sshil/opensource/cassandra/build/test/classes > > [javac] warning: Supported source version 'RELEASE_6' from annotation > processor 'org.openjdk.jmh.generators.BenchmarkProcessor' less than -source > '1.8' > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/AbstractCluster.java:117: > error: cannot find symbol > > [javac] > InstanceClassLoader.getDefaultLoadSharedFilter().test(s) || > > [javac] > ^ > > [javac] symbol: method getDefaultLoadSharedFilter() > > [javac] location: class InstanceClassLoader > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/DelegatingInvokableInstance.java:66: > error: cannot find symbol > > [javac] return delegate().executeInternalWithResult(query, > args); > > [javac] ^ > > [javac] symbol: method executeInternalWithResult(String,Object[]) > > [javac] location: interface IInvokableInstance > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/DelegatingInvokableInstance.java:93: > error: method does not override or implement a method from a supertype > > [javac] @Override > > [javac] ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/DelegatingInvokableInstance.java:96: > error: cannot find symbol > > [javac] return delegate().getReleaseVersionString(); > > [javac] ^ > > [javac] symbol: method getReleaseVersionString() > > [javac] location: interface IInvokableInstance > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/AbstractCluster.java:177: > error: constructor InstanceClassLoader in class InstanceClassLoader cannot > be applied to given types; > > [javac] ClassLoader classLoader = new > InstanceClassLoader(generation, config.num(), version.classpath, > sharedClassLoader, SHARED_PREDICATE); > > [javac] ^ > > [javac] required: int,int,URL[],ClassLoader > > [javac] found: int,int,URL[],ClassLoader,Predicate<String> > > [javac] reason: actual and formal argument lists differ in length > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/AbstractCluster.java:251: > error: method does not override or implement a method from a supertype > > [javac] @Override > > [javac] ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/AbstractCluster.java:254: > error: cannot find symbol > > [javac] return delegate().getLogsEnabled(); > > [javac] ^ > > [javac] symbol: method getLogsEnabled() > > [javac] location: interface IInvokableInstance > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/AbstractCluster.java:257: > error: method does not override or implement a method from a supertype > > [javac] @Override > > [javac] ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/AbstractCluster.java:260: > error: cannot find symbol > > [javac] return delegate().logs(); > > [javac] ^ > > [javac] symbol: method logs() > > [javac] location: interface IInvokableInstance > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/AbstractCluster.java:689: > error: method does not override or implement a method from a supertype > > [javac] @Override > > [javac] ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/AbstractCluster.java:716: > error: method does not override or implement a method from a supertype > > [javac] @Override > > [javac] ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/Coordinator.java:51: > error: Coordinator is not abstract and does not override abstract method > asyncExecuteWithTracing(UUID,String,ConsistencyLevel,Object...) in > ICoordinator > > [javac] public class Coordinator implements ICoordinator > > [javac] ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/Coordinator.java:60: > error: executeWithResult(String,ConsistencyLevel,Object...) in Coordinator > cannot implement executeWithResult(String,ConsistencyLevel,Object...) in > ICoordinator > > [javac] public SimpleQueryResult executeWithResult(String query, > ConsistencyLevel consistencyLevel, Object... boundValues) > > [javac] ^ > > [javac] return type SimpleQueryResult is not compatible with > QueryResult > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/Coordinator.java:59: > error: method does not override or implement a method from a supertype > > [javac] @Override > > [javac] ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/Coordinator.java:126: > error: method does not override or implement a method from a supertype > > [javac] @Override > > [javac] ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/Instance.java:127: > error: Instance is not abstract and does not override abstract method > executeInternal(String,Object...) in IInstance > > [javac] public class Instance extends IsolatedExecutor implements > IInvokableInstance > > [javac] ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/Instance.java:148: > error: method does not override or implement a method from a supertype > > [javac] @Override > > [javac] ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/Instance.java:154: > error: method does not override or implement a method from a supertype > > [javac] @Override > > [javac] ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/Instance.java:186: > error: method does not override or implement a method from a supertype > > [javac] @Override > > [javac] ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/Instance.java:811: > error: constructor NodeToolResult in class NodeToolResult cannot be applied > to given types; > > [javac] return new NodeToolResult(commandAndArgs, rc, > > [javac] ^ > > [javac] required: String[],int,List<Notification>,Throwable > > [javac] found: > String[],int,ArrayList<Notification>,Throwable,String,String > > [javac] reason: actual and formal argument lists differ in length > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/impl/Instance.java:817: > error: incompatible types: Object cannot be converted to NodeToolResult > > [javac] }).call(); > > [javac] ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/TestBaseImpl.java:28: > error: TestBaseImpl is not abstract and does not override abstract method > <I,C>builder() in DistributedTestBase > > [javac] public class TestBaseImpl extends DistributedTestBase > > [javac] ^ > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/TestBaseImpl.java:41: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public Cluster.Builder builder() { > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/TestBaseImpl.java:40: > error: method does not override or implement a method from a supertype > > [javac] @Override > > [javac] ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/BootstrapBinaryDisabledTest.java:44: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class BootstrapBinaryDisabledTest extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/BootstrapBinaryDisabledTest.java:122: > error: cannot find symbol > > [javac] node.logs().watchFor("Starting listening for CQL > clients"); > > [javac] ^ > > [javac] symbol: method logs() > > [javac] location: variable node of type IInvokableInstance > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/BootstrapBinaryDisabledTest.java:128: > error: cannot find symbol > > [javac] SimpleQueryResult qr = > node.executeInternalWithResult("SELECT bootstrapped FROM system.local WHERE > key='local'"); > > [javac] ^ > > [javac] symbol: method executeInternalWithResult(String) > > [javac] location: variable node of type IInvokableInstance > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/BootstrapBinaryDisabledTest.java:135: > error: cannot find symbol > > [javac] LogResult<List<String>> results = node.logs().grep(msg); > > [javac] ^ > > [javac] symbol: method logs() > > [javac] location: variable node of type IInvokableInstance > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/BootstrapTest.java:39: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class BootstrapTest extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/ByteBuddyExamples.java:44: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class ByteBuddyExamples extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/CASTest.java:53: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class CASTest extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/ClientNetworkStopStartTest.java:46: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class ClientNetworkStopStartTest extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/ClientNetworkStopStartTest.java:85: > error: incompatible types: QueryResult cannot be converted to > SimpleQueryResult > > [javac] SimpleQueryResult qr = > cluster.coordinator(1).executeWithResult("SELECT * FROM " + KEYSPACE + > ".tbl", ConsistencyLevel.ALL); > > [javac] > ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/ClientNetworkStopStartTest.java:86: > error: no suitable method found for > assertRows(SimpleQueryResult,SimpleQueryResult) > > [javac] AssertUtils.assertRows(qr, > QueryResults.builder().row(0, 0).build()); > > [javac] ^ > > [javac] method AssertUtils.assertRows(Object[][],Object[]...) is > not applicable > > [javac] (argument mismatch; SimpleQueryResult cannot be converted > to Object[][]) > > [javac] method > AssertUtils.assertRows(Iterator<Object[]>,Iterator<Object[]>) is not > applicable > > [javac] (argument mismatch; SimpleQueryResult cannot be converted > to Iterator<Object[]>) > > [javac] method > AssertUtils.assertRows(Iterator<Object[]>,Object[]...) is not applicable > > [javac] (argument mismatch; SimpleQueryResult cannot be converted > to Iterator<Object[]>) > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/ClientNetworkStopStartTest.java:117: > error: incompatible types: QueryResult cannot be converted to > SimpleQueryResult > > [javac] SimpleQueryResult qr = > cluster.coordinator(1).executeWithResult("SELECT * FROM " + KEYSPACE + > ".tbl", ConsistencyLevel.ALL); > > [javac] > ^ > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/ClientNetworkStopStartTest.java:118: > error: no suitable method found for > assertRows(SimpleQueryResult,SimpleQueryResult) > > [javac] AssertUtils.assertRows(qr, > QueryResults.builder().row(0, 0).build()); > > [javac] ^ > > [javac] method AssertUtils.assertRows(Object[][],Object[]...) is > not applicable > > [javac] (argument mismatch; SimpleQueryResult cannot be converted > to Object[][]) > > [javac] method > AssertUtils.assertRows(Iterator<Object[]>,Iterator<Object[]>) is not > applicable > > [javac] (argument mismatch; SimpleQueryResult cannot be converted > to Iterator<Object[]>) > > [javac] method > AssertUtils.assertRows(Iterator<Object[]>,Object[]...) is not applicable > > [javac] (argument mismatch; SimpleQueryResult cannot be converted > to Iterator<Object[]>) > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/ClientNetworkStopStartTest.java:130: > error: cannot find symbol > > [javac] asserts.stdoutContains(expectedStatus); > > [javac] ^ > > [javac] symbol: method stdoutContains(String) > > [javac] location: variable asserts of type NodeToolResult.Asserts > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/ClientNetworkStopStartTest.java:132: > error: cannot find symbol > > [javac] asserts.stdoutNotContains(notExpected); > > [javac] ^ > > [javac] symbol: method stdoutNotContains(String) > > [javac] location: variable asserts of type NodeToolResult.Asserts > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/GossipSettlesTest.java:29: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class GossipSettlesTest extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/GossipShutdownTest.java:46: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class GossipShutdownTest extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/GossipTest.java:53: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class GossipTest extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/JVMDTestTest.java:51: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class JVMDTestTest extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/JVMDTestTest.java:79: > error: cannot find symbol > > [javac] > assertFalse(cluster.get(1).logs().grep("^DEBUG").getResult().isEmpty()); > > [javac] ^ > > [javac] symbol: method logs() > > [javac] location: interface IInvokableInstance > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/JVMDTestTest.java:81: > error: cannot find symbol > > [javac] LogAction logs = cluster.get(2).logs(); > > [javac] ^ > > [javac] symbol: method logs() > > [javac] location: interface IInvokableInstance > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/JVMStabilityInspectorCorruptSSTableExceptionTest.java:54: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class JVMStabilityInspectorCorruptSSTableExceptionTest > extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/MessageFiltersTest.java:40: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class MessageFiltersTest extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/MessageForwardingTest.java:40: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class MessageForwardingTest extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/NativeProtocolTest.java:38: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class NativeProtocolTest extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/NetworkTopologyTest.java:36: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class NetworkTopologyTest extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/NodeToolTest.java:29: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class NodeToolTest extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C> > > [javac] where I,C are type-variables: > > [javac] I extends IInstance declared in method <I,C>builder() > > [javac] C extends ICluster declared in method <I,C>builder() > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/NodeToolTest.java:48: > error: cannot find symbol > > [javac] ringResult.asserts().stdoutContains("Datacenter: > datacenter0"); > > [javac] ^ > > [javac] symbol: method stdoutContains(String) > > [javac] location: class NodeToolResult.Asserts > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/NodeToolTest.java:49: > error: cannot find symbol > > [javac] > ringResult.asserts().stdoutContains("127.0.0.1 rack0 Up > Normal"); > > [javac] ^ > > [javac] symbol: method stdoutContains(String) > > [javac] location: class NodeToolResult.Asserts > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/NodeToolTest.java:50: > error: cannot find symbol > > [javac] assertEquals("Non-empty error output", "", > ringResult.getStderr()); > > [javac] > ^ > > [javac] symbol: method getStderr() > > [javac] location: variable ringResult of type NodeToolResult > > [javac] > /Users/sshil/opensource/cassandra/test/distributed/org/apache/cassandra/distributed/test/ReadRepairTest.java:28: > error: builder() in TestBaseImpl cannot override <I,C>builder() in > DistributedTestBase > > [javac] public class ReadRepairTest extends TestBaseImpl > > [javac] ^ > > [javac] return type org.apache.cassandra.distributed.Cluster.Builder > is not compatible with org.apache.cassandra.distributed.shared.Builder<I,C>
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