MongoDB YCSB:连接错误

我正在为mongodb运行YCSB和以下文档

加载数据时使用：

./bin/ycsb load mongodb-s-p workloads/workloada>outputLoad.txt

一个文档正在插入mongodb。但获得以下与主机名和连接字符串相关的奇怪名称：

 0 sec: 0 operations; 
Found server connection string 
Found server connection string l
Found server connection string o
Found server connection string c
Found server connection string a
Found server connection string l
Found server connection string h
Found server connection string o
Found server connection string s
Found server connection string t
Found server connection string :
Found server connection string 2
Found server connection string 7
Found server connection string 0
Found server connection string 1
Found server connection string 7
 10 sec: 1 operations; 0.1 current ops/sec; [INSERT AverageLatency(us)=1106185] 
Couldn't insert key user8517097267634966620
com.mongodb.MongoTimeoutException: Timed out after 10000 ms while waiting for a server that matches AnyServerSelector{}. Client view of cluster state is {type=Unknown, servers=[{address=l:27017, type=Unknown, state=Connecting, exception={com.mongodb.MongoException$Network: Exception opening the socket}, caused by {java.net.UnknownHostException: l: Name or service not known}}]
    at com.mongodb.BaseCluster.getServer(BaseCluster.java:82)
    at com.mongodb.DBTCPConnector.getServer(DBTCPConnector.java:656)
    at com.mongodb.DBTCPConnector.access$500(DBTCPConnector.java:40)
    at com.mongodb.DBTCPConnector$MyPort.getConnection(DBTCPConnector.java:505)
    at com.mongodb.DBTCPConnector$MyPort.get(DBTCPConnector.java:448)
    at com.mongodb.DBTCPConnector.getPrimaryPort(DBTCPConnector.java:407)
    at com.mongodb.DBCollectionImpl.insert(DBCollectionImpl.java:184)
    at com.mongodb.DBCollectionImpl.insert(DBCollectionImpl.java:167)
    at com.mongodb.DBCollection.insert(DBCollection.java:93)
    at com.mongodb.DBCollection.insert(DBCollection.java:78)
    at com.mongodb.DBCollection.insert(DBCollection.java:120)
    at com.yahoo.ycsb.db.MongoDbClient.insert(MongoDbClient.java:254)
    at com.yahoo.ycsb.DBWrapper.insert(DBWrapper.java:148)
    at com.yahoo.ycsb.workloads.CoreWorkload.doInsert(CoreWorkload.java:461)
    at com.yahoo.ycsb.ClientThread.run(Client.java:269)
 11 sec: 1 operations; 0 current ops/sec; [INSERT AverageLatency(us)=10005522] [CLEANUP AverageLatency(us)=10127]

另外，我在堆栈跟踪中看到了l:Name或service not known，其中l似乎是从localhost提取的

我试图找到一个问题，但是这个代码测试对我来说不起作用

有人能找到连接字符串的问题吗？mongodb服务器已启动并正常运行。出现问题时，mongo日志中未记录任何错误。我用bind_ip:0.0.0.0和本地主机的不同主机名对它进行了测试

Mongodb版本3.0.4、mmapv1、ApacheMaven 3.0.5