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https://issues.apache.org/jira/browse/HDFS-62?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12876377#action_12876377
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Jakob Homan commented on HDFS-62:
---------------------------------
Seeing as there hasn't been any movement on this in more than a year, and that
HDFS-1080 also solves this issue, I'd like to close this as won't fix. I think
I prefer the 1080 approach for two reasons: it relies on user-provided
configuration to guarantee the hostname is reported as expected, rather than
how we may be able to decipher, and also it's a smaller change with fewer
moving parts.
Thoughts?
> SecondaryNamenode may report incorrect info host name
> -----------------------------------------------------
>
> Key: HDFS-62
> URL: https://issues.apache.org/jira/browse/HDFS-62
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Carlos Valiente
> Assignee: Todd Lipcon
> Priority: Minor
> Attachments: HADOOP-5626.patch, hadoop-5626.txt
>
>
> I have set up {{dfs.secondary.http.address}} like this:
> {code}
> <property>
> <name>dfs.secondary.http.address</name>
> <value>secondary.example.com:50090</value>
> </property>
> {code}
> In my setup {{secondary.example.com}} resolves to an IP address (say,
> 192.168.0.10) which is not the same as the host's name (as returned by
> {{InetAddress.getLocalHost().getHostAddress()}}, say 192.168.0.1).
> In this situation, edit log related transfers fail. From the namenode log:
> {code}
> 2009-04-05 13:32:39,128 INFO
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Roll Edit Log from
> 192.168.0.10
> 2009-04-05 13:32:39,168 WARN org.mortbay.log: /getimage: java.io.IOException:
> GetImage failed. java.net.ConnectException: Connection refused
> at java.net.PlainSocketImpl.socketConnect(Native Method)
> at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
> at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
> at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
> at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
> at java.net.Socket.connect(Socket.java:519)
> at java.net.Socket.connect(Socket.java:469)
> at sun.net.NetworkClient.doConnect(NetworkClient.java:163)
> at sun.net.www.http.HttpClient.openServer(HttpClient.java:394)
> at sun.net.www.http.HttpClient.openServer(HttpClient.java:529)
> at sun.net.www.http.HttpClient.<init>(HttpClient.java:233)
> at sun.net.www.http.HttpClient.New(HttpClient.java:306)
> at sun.net.www.http.HttpClient.New(HttpClient.java:323)
> at
> sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:837)
> at
> sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:778)
> at
> sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:703)
> at
> sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1026)
> at
> org.apache.hadoop.hdfs.server.namenode.TransferFsImage.getFileClient(TransferFsImage.java:151)
> ...
> {code}
> From the secondary namenode log:
> {code}
> 2009-04-05 13:42:39,238 ERROR
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: Exception in
> doCheckpoint:
> 2009-04-05 13:42:39,238 ERROR
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode:
> java.io.FileNotFoundException:
> http://nn.example.com:50070/getimage?putimage=1&port=50090&machine=
> 192.168.0.1&token=-19:1243068779:0:1238929357000:1238929031783
> at
> sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1288)
> at
> org.apache.hadoop.hdfs.server.namenode.TransferFsImage.getFileClient(TransferFsImage.java:151)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.putFSImage(SecondaryNameNode.java:294)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doCheckpoint(SecondaryNameNode.java:333)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.run(SecondaryNameNode.java:239)
> at java.lang.Thread.run(Thread.java:619)
> {code}
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