SecondaryNamenode may report incorrect info host name
-----------------------------------------------------
Key: HADOOP-5626
URL: https://issues.apache.org/jira/browse/HADOOP-5626
Project: Hadoop Core
Issue Type: Bug
Components: dfs
Reporter: Carlos Valiente
Priority: Minor
Fix For: 0.21.0
Attachments: HADOOP-5626.patch
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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