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https://issues.apache.org/jira/browse/CASSANDRA-15670?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Francisco Fernandez reassigned CASSANDRA-15670:
-----------------------------------------------

    Assignee: Francisco Fernandez

> Transient Replication: unable to insert data when the keyspace is configured 
> with the SimpleStrategy
> ----------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-15670
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15670
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Feature/Transient Replication
>            Reporter: Alan Boudreault
>            Assignee: Francisco Fernandez
>            Priority: Normal
>             Fix For: 4.0-rc
>
>
> An error is thrown then trying to insert data with the transient replication 
> + SimpleStrategy configured.
> Test case:
> {code:java}
> CREATE KEYSPACE test_tr WITH replication = {'class': 'SimpleStrategy', 
> 'replication_factor': '3/1'};
> CREATE TABLE test_tr.users (id int PRIMARY KEY, username text) with 
> read_repair ='NONE';
> INSERT INTO test_tr.users (id, username) VALUES (1, 'alan');{code}
>  
> traceback:
> {code:java}
> ERROR [Native-Transport-Requests-8] 2020-03-27 10:27:17,188 
> ErrorMessage.java:450 - Unexpected exception during request
> java.lang.ClassCastException: org.apache.cassandra.locator.SimpleStrategy 
> cannot be cast to org.apache.cassandra.locator.NetworkTopologyStrategy
>       at 
> org.apache.cassandra.db.ConsistencyLevel.eachQuorumForRead(ConsistencyLevel.java:103)
>       at 
> org.apache.cassandra.db.ConsistencyLevel.eachQuorumForWrite(ConsistencyLevel.java:112)
>       at 
> org.apache.cassandra.locator.ReplicaPlans$2.select(ReplicaPlans.java:409)
>       at 
> org.apache.cassandra.locator.ReplicaPlans.forWrite(ReplicaPlans.java:353)
>       at 
> org.apache.cassandra.locator.ReplicaPlans.forWrite(ReplicaPlans.java:348)
>       at 
> org.apache.cassandra.locator.ReplicaPlans.forWrite(ReplicaPlans.java:341)
>       at 
> org.apache.cassandra.locator.ReplicaPlans.forWrite(ReplicaPlans.java:330)
>       at 
> org.apache.cassandra.service.StorageProxy.performWrite(StorageProxy.java:1171)
>       at 
> org.apache.cassandra.service.StorageProxy.mutate(StorageProxy.java:713)
>       at 
> org.apache.cassandra.service.StorageProxy.mutateWithTriggers(StorageProxy.java:951)
>       at 
> org.apache.cassandra.cql3.statements.ModificationStatement.executeWithoutCondition(ModificationStatement.java:475)
>       at 
> org.apache.cassandra.cql3.statements.ModificationStatement.execute(ModificationStatement.java:453)
>       at 
> org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:216)
>       at 
> org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:247)
>       at 
> org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:233)
>       at 
> org.apache.cassandra.transport.messages.QueryMessage.execute(QueryMessage.java:108)
>       at 
> org.apache.cassandra.transport.Message$Request.execute(Message.java:253)
>       at 
> org.apache.cassandra.transport.Message$Dispatcher.processRequest(Message.java:725)
>       at 
> org.apache.cassandra.transport.Message$Dispatcher.lambda$channelRead0$0(Message.java:630)
>       at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>       at 
> org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:165)
>       at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:119)
>       at 
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
>       at java.lang.Thread.run(Thread.java:748)
>  {code}
>  
> --> 
> https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/db/ConsistencyLevel.java#L103



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