com.datastax.oss.driver.api.core.DriverTimeoutException：查询'SELECT * FROM system.local'在PT0.5S之后超时

问题描述

当我尝试运行试图连接到Cassandra的Java应用程序时，出现以下异常：

com.datastax.oss.driver.api.core.DriverTimeoutException: query 'SELECT * FROM system.local' timed out after PT0.5S

    DriverConfigLoader configBuilder = DriverConfigLoader.programmaticBuilder()
                .withClass(DefaultDriverOption.AUTH_PROVIDER_CLASS,PlainTextAuthProvider.class)
                .withString(DefaultDriverOption.AUTH_PROVIDER_USER_NAME,user)
                .withString(DefaultDriverOption.AUTH_PROVIDER_PASSWORD,pass)
                .withBoolean(DefaultDriverOption.CONNECTION_WARN_INIT_ERROR,false)
                .withInt(DefaultDriverOption.CONNECTION_MAX_REQUESTS,32768)
                .withDuration(DefaultDriverOption.REQUEST_TIMEOUT,Duration.ofSeconds(30))
                .withDuration(DefaultDriverOption.CONNECTION_INIT_QUERY_TIMEOUT,Duration.ofSeconds(10)).build();

        try {
            cqlSession = CqlSession.builder().addContactPoints(hostsList).withKeyspace(keyspace)
                    .withLocalDatacenter(dataCenter).withConfigLoader(configBuilder).build();
        } catch (Exception e) {
            logger.error("CassandraConfig >> Unable to connect to database {}",e);
        }

解决方法

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