Web applications 卡桑德拉和赫克托在不活动后折断了管子

我有一个在Tomcat6上运行的web应用程序。在30或60分钟的不活动之后，如果我刷新页面，就会出现管道破裂问题，下面报告了异常情况

我试图在其他线程中查找问题，发现有一个更新可以修复它，所以我更新到最新版本Hector 1.1、Thrift 1.1.0和Cassandra 1.1.4，但问题仍然存在。我正在使用默认的Cassandra配置，就像它来自apt get on Ubuntu一样，目前我只有一个节点

任何帮助都将不胜感激。谢谢

2012-09-04 11:03:02,809 ERROR client.HThriftClient [http-8080-3,close:100] Could not flush transport (to be expected if the pool is shutting down) in close for client: CassandraClient<node1.p.cassandra.research-infrastructures.eu:9160-5>
org.apache.thrift.transport.TTransportException: java.net.SocketException: Broken pipe
    at org.apache.thrift.transport.TIOStreamTransport.write(TIOStreamTransport.java:147)
    at org.apache.thrift.transport.TFramedTransport.flush(TFramedTransport.java:156)
    at me.prettyprint.cassandra.connection.client.HThriftClient.close(HThriftClient.java:98)
    at me.prettyprint.cassandra.connection.client.HThriftClient.close(HThriftClient.java:26)

2012-09-04 11:03:48,544 ERROR client.HThriftClient [http-8080-9,close:100] Could not flush transport (to be expected if the pool is shutting down) in close for client: CassandraClient<node1.p.cassandra.research-infrastructures.eu:9160-6>
org.apache.thrift.transport.TTransportException: java.net.SocketException: Broken pipe
    at org.apache.thrift.transport.TIOStreamTransport.write(TIOStreamTransport.java:147)
    at org.apache.thrift.transport.TFramedTransport.flush(TFramedTransport.java:156)

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如果你长时间不活动，你的连接很可能超时。如果您捕获该异常并重新连接，如果您得到它，我相信错误将消失。如果你有那么多时间不活动，我想知道你是否需要卡桑德拉