Java 可读字节不足-需要4个,最大值为0
连接到Cassandra数据库并创建键空间时,我遇到以下错误 线程“main”>com.datastax.driver.core.exceptions.NoHostAvailableException中的异常:Java 可读字节不足-需要4个,最大值为0,java,hadoop,cassandra,database,nosql,Java,Hadoop,Cassandra,Database,Nosql,连接到Cassandra数据库并创建键空间时,我遇到以下错误 线程“main”>com.datastax.driver.core.exceptions.NoHostAvailableException中的异常: 尝试查询的所有主机均失败(已尝试:/127.0.0.1:9042 (com.datastax.driver.core.ConnectionException:[/127.0.0.1:9042]传输初始化期间出现意外错误 (com.datastax.driver.core.Transpor
尝试查询的所有主机均失败(已尝试:/127.0.0.1:9042
(com.datastax.driver.core.ConnectionException:[/127.0.0.1:9042]传输初始化期间出现意外错误
(com.datastax.driver.core.TransportException:[/127.0.0.1:9042]意外异常已触发(java.lang.IndexOutOfBoundsException:可读字节不足-需要4,最大值为0))) 这是我的代码:
package com.hadoop.reloaded.cassandra;
import com.datastax.driver.core.*;
public class CassandraOne {
public static void main(String[] args){
Cluster cluster1 = Cluster.builder().withPort(9042).addContactPoint("127.0.0.1").build();
Session session = cluster1.connect();
String query = "CREATE KEYSPACE test WITH replication "
+ "= {'class':'SimpleStrategy', 'replication_factor':1}; ";
session.execute(query);
session.execute("USE test");
}
}
当我运行它时,会引发此异常:
Exception in thread "main" com.datastax.driver.core.exceptions.NoHostAvailableException:
All host(s) tried for query failed (tried: /127.0.0.1:9042 (
com.datastax.driver.core.ConnectionException: [/127.0.0.1:9042]
Unexpected error during transport initialization (
com.datastax.driver.core.TransportException: [/127.0.0.1:9042]
Unexpected exception triggered (java.lang.IndexOutOfBoundsException: Not enough readable bytes - Need 4, maximum is 0))))
at com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:196)
at com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:79)
at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:1104)
at com.datastax.driver.core.Cluster.init(Cluster.java:121)
at com.datastax.driver.core.Cluster.connect(Cluster.java:198)
at com.hadoop.reloaded.cassandra.CassandraOne.main(CassandraOne.java:13)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
也许是编码问题
更多关于的详细信息我猜您使用的是一个太旧的Datastax Java驱动程序版本。检查您是否正在运行3.0.0或更高版本,因为连接到Cassandra 3.X群集需要此版本。在将驱动程序升级到
Cassandra-driver-core-3.0.3.jar之后,我遇到了同样的问题。
和这张照片一样性感。问题已经解决
您使用的是哪个版本的datastax java驱动程序,以及哪个版本的Cassandra?我使用的是java 1.8和Cassansdra 3.7版本