Hello. I'm facing a issue when trying to configure my SecondaryNameNode on a
different machine than my NameNode. When both are on the same machine
everything works fine but after moving the secondary to a new machine I get:
2012-05-28 09:57:36,832 ERROR org.apache.hadoop.security.UserGroupInformation:
PriviledgedActionException as:hadoop cause:java.net.ConnectException:
Connection refused
2012-05-28 09:57:36,832 ERROR
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: Exception in
doCheckpoint:
2012-05-28 09:57:36,834 ERROR
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode:
java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at
java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327)
at
java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:191)
at
java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)
at java.net.Socket.connect(Socket.java:546)
at java.net.Socket.connect(Socket.java:495)
at sun.net.NetworkClient.doConnect(NetworkClient.java:178)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:409)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:530)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:240)
at sun.net.www.http.HttpClient.New(HttpClient.java:321)
at sun.net.www.http.HttpClient.New(HttpClient.java:338)
at
sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:935)
at
sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:876)
at
sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:801)
Is there any configuration I'm missing? At this point my mapred-site.xml is
very simple just:
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
<property>
<name>mapred.job.tracker</name>
<value>hadoop00:9001</value>
</property>
<property>
<name>mapred.system.dir</name>
<value>/home/hadoop/mapred/system</value>
</property>
<property>
<name>mapred.local.dir</name>
<value>/home/hadoop/mapred/local</value>
</property>
<property>
<name>mapred.jobtracker.taskScheduler</name>
<value>org.apache.hadoop.mapred.FairScheduler</value>
</property>
<property>
<name>mapred.fairscheduler.allocation.file</name>
<value>/home/hadoop/hadoop/conf/fairscheduler.xml</value>
</property>
</configuration>
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