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当尝试将实体从 Cygnus 持久化到 Cosmos 全局实例时，它失败了。

查看日志文件，我看到类似的内容：

2015 15:31:50,006 DEBUG [SinkRunner-PollingRunner-DefaultSinkProcessor] (org.apache.http.impl.conn.DefaultClientConnection.sendRequestHeader:273)  - >> GET /webhdfs/v1/user/ms/def_serv/def_servpath/6_registervalues/6_registervalues.txt?op=getfilestatus&user.name=ms HTTP/1.1
12 Nov 2015 15:31:50,006 DEBUG [SinkRunner-PollingRunner-DefaultSinkProcessor] (org.apache.http.impl.conn.DefaultClientConnection.sendRequestHeader:276)  - >> X-Auth-Token: xxxxxxxxxxxxxxxxxxx
12 Nov 2015 15:31:50,006 DEBUG [SinkRunner-PollingRunner-DefaultSinkProcessor] (org.apache.http.impl.conn.DefaultClientConnection.sendRequestHeader:276)  - >> Host: cosmos.lab.fiware.org:14000
12 Nov 2015 15:31:50,006 DEBUG [SinkRunner-PollingRunner-DefaultSinkProcessor] (org.apache.http.impl.conn.DefaultClientConnection.sendRequestHeader:276)  - >> Connection: Keep-Alive
12 Nov 2015 15:31:50,007 DEBUG [SinkRunner-PollingRunner-DefaultSinkProcessor] (org.apache.http.impl.conn.DefaultClientConnection.sendRequestHeader:276)  - >> User-Agent: Apache-HttpClient/4.2.1 (java 1.5)
12 Nov 2015 15:31:50,284 DEBUG [SinkRunner-PollingRunner-DefaultSinkProcessor] (org.apache.http.impl.conn.DefaultClientConnection.close:169)  - Connection 0.0.0.0:59834<->130.206.80.46:14000 closed
12 Nov 2015 15:31:50,285 DEBUG [SinkRunner-PollingRunner-DefaultSinkProcessor] (org.apache.http.impl.client.DefaultRequestDirector.tryExecute:716)  - Closing the connection.
12 Nov 2015 15:31:50,285 DEBUG [SinkRunner-PollingRunner-DefaultSinkProcessor] (org.apache.http.impl.conn.DefaultClientConnection.close:169)  - Connection 0.0.0.0:59834<->130.206.80.46:14000 closed
12 Nov 2015 15:31:50,286 INFO  [SinkRunner-PollingRunner-DefaultSinkProcessor] (org.apache.http.impl.client.DefaultRequestDirector.tryExecute:723)  - I/O exception (java.net.SocketException) caught when processing request: Connection reset
12 Nov 2015 15:31:50,287 DEBUG [SinkRunner-PollingRunner-DefaultSinkProcessor] (org.apache.http.impl.client.DefaultRequestDirector.tryExecute:728)  - Connection reset
java.net.SocketException: Connection reset
    at java.net.SocketInputStream.read(SocketInputStream.java:185)
    at org.apache.http.impl.io.AbstractSessionInputBuffer.fillBuffer(AbstractSessionInputBuffer.java:166)

（我在上面的示例中混淆了令牌。）

由于某种原因，连接已关闭。

Orion 和 Cygnus 安装在西班牙的一个固件实验室私有实例上2。

当尝试从 Orion 机器的命令行发出相同的请求时，我得到相同的断开连接的响应。

curl -X GET "http://cosmos.lab.fiware.org:14000/webhdfs/v1/user/ms/def_serv/def_servpath/6_registervalues/6_registervalues.txt?op=getfilestatus&user.name=ms" -H "X-Auth-Token: xxxxxxxxxxxxxxxxxxxxxx"
curl: (56) Failure when receiving data from the peer

但令人惊讶的是，当从 Cosmos 全局实例的命令行执行相同的请求时，它可以工作！

看：

[ms@cosmosmaster-gi ~]$ curl -X GET "http://cosmos.lab.fiware.org:14000/webhdfs/v1/user/ms/def_serv/def_servpath/6_registervalues/6_registervalues.txt?op=getfilestatus&user.name=ms" -H "X-Auth-Token: xxxxxxxxxxxxxxxxx"
{"FileStatus":{"pathSuffix":"","type":"FILE","length":2,"owner":"ms","group":"ms","permission":"644","accessTime":1447332222908,"modificationTime":1447253745711,"blockSize":67108864,"replication":3}}
[ms@cosmosmaster-gi ~]$

似乎 Cosmos 不会为来自西班牙 2 上运行的固件实验室实例的连接提供服务。

有谁知道这里有什么问题，以及如何纠正这个问题。

谢谢！

梅纳赫姆 S.

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1 回答 1

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问题已通过解决方法解决。

Cygnus 服务器安装在外部节点（Azure 上的机器）上，一切正常 wrt Orion-->Cygnus-->Cosmos 流。

于 2015-11-19T07:57:34.117 回答