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[ https://issues.apache.org/jira/browse/HDFS-62?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jakob Homan resolved HDFS-62.
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Resolution: Won't Fix

Not hearing any objections, I'm resolving this issue.
SecondaryNamenode may report incorrect info host name
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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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