hi
here I choose a machine as a namenode,and a machine as a secondary namenode,
a machine as a datanode.
when i start up hadoop(bin/start-all.sh),
there are some errors in secondary namenode,like this:
2009-10-21 15:34:30,317 INFO org.apache.hadoop.hdfs.server.common.Storage:
Recovering storage directory /data1/hadoopfs/namesecondary from failed
checkpoint.
2009-10-21 15:34:30,319 ERROR
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: Exception in
doCheckpoint:
2009-10-21 15:34:30,320 ERROR
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode:
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:193)
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)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.downloadCheckpointFiles(SecondaryNameNode.java:256)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doCheckpoint(SecondaryNameNode.java:313)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.run(SecondaryNameNode.java:225)
at java.lang.Thread.run(Thread.java:619)
the log in namenode is like this:
2009-10-21 15:31:25,996 INFO
org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Roll Edit Log from
100.207.100.33
........
can anybody tell me the reason?
Thanks!
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