Question

我没有设法执行应该更新SimpleStrategy密钥空间的复制因子的cql语句。这很麻烦，因为这适用于所有三个版本的CQLSH。

我正在使用的键空间上下文设置为使用cqlv3 .setCqlVersion("3.0.0")

cql：

"ALTER KEYSPACE \"" + ksContext.getKeyspaceName() + "\" WITH REPLICATION = { " + 
            "'class' : 'SimpleStrategy', 'replication_factor' : 3 };";

堆栈追踪：

InvalidRequestException(why:line 1:108 no viable alternative at character '}')

at com.netflix.astyanax.thrift.ThriftConverter.ToConnectionPoolException(ThriftConverter.java:159)
at com.netflix.astyanax.thrift.AbstractOperationImpl.execute(AbstractOperationImpl.java:60)
at com.netflix.astyanax.thrift.AbstractOperationImpl.execute(AbstractOperationImpl.java:27)
at com.netflix.astyanax.thrift.ThriftSyncConnectionFactoryImpl$1.execute(ThriftSyncConnectionFactoryImpl.java:140)
at com.netflix.astyanax.connectionpool.impl.AbstractExecuteWithFailoverImpl.tryOperation(AbstractExecuteWithFailoverImpl.java:69)
at com.netflix.astyanax.connectionpool.impl.AbstractHostPartitionConnectionPool.executeWithFailover(AbstractHostPartitionConnectionPool.java:255)
at com.netflix.astyanax.thrift.ThriftColumnFamilyQueryImpl$6.execute(ThriftColumnFamilyQueryImpl.java:694)
at smail.cli.astyanax.Astyanax.execCQL(Astyanax.java:75)
at smail.cli.astyanax.Astyanax.alterReplicationFactor(Astyanax.java:307)
at smail.cli.test.SchemaTest.alterReplicationFactor(SchemaTest.java:25)
at smail.cli.test.TestSuite.runTests(TestSuite.java:39)
at smail.cli.Main.main(Main.java:22)

Answer 1

Astyanax确实在cql3方面遇到了一些问题，但它取得了很大进展。创建一个新的密钥空间并使用CQLv2（通过在上下文中设置它）并在没有"引号的情况下尝试它：

String query = "ALTER KEYSPACE " + keyspaceName + " WITH REPLICATION = { 
               'class' : 'SimpleStrategy', 'replication_factor' : 2 };";

注意* 在此查询中，您要将重复因子更新为 2 。

Astyanax ALTER KEYSPACE CQL

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