Hi, I've forgotten to start start-mapred.sh Thanks All
-----Original Message----- From: Cavus,M.,Fa. Post Direkt [mailto:m.ca...@postdirekt.de] Sent: Friday, December 31, 2010 10:20 AM To: common-user@hadoop.apache.org Subject: RE: Retrying connect to server Hi, I do get this: $ jps 6017 DataNode 5805 NameNode 6234 SecondaryNameNode 6354 Jps What can I do to start JobTracker? Here my config Files: $ cat mapred-site.xml <?xml version="1.0"?> <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> <!-- Put site-specific property overrides in this file. --> <configuration> <property> <name>mapred.job.tracker</name> <value>localhost:9001</value> <description>The host and port that the MapReduce job tracker runs at.</description> </property> </configuration> cat hdfs-site.xml <?xml version="1.0"?> <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> <!-- Put site-specific property overrides in this file. --> <configuration> <property> <name>dfs.replication</name> <value>1</value> <description>The actual number of replications can be specified when the file is created.</description> </property> </configuration> $ cat core-site.xml <?xml version="1.0"?> <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> <!-- Put site-specific property overrides in this file. --> <configuration> <property> <name>fs.default.name</name> <value>hdfs://localhost:9000</value> <description>The name of the default file system. A URI whose scheme and authority determine the FileSystem implementation. </description> </property> </configuration> -----Original Message----- From: James Seigel [mailto:ja...@tynt.com] Sent: Friday, December 31, 2010 4:56 AM To: common-user@hadoop.apache.org Subject: Re: Retrying connect to server Or.... 3) The configuration (or lack thereof) on the machine you are trying to run this, has no idea where your DFS or JobTracker is :) Cheers James. On 2010-12-30, at 8:53 PM, Adarsh Sharma wrote: > Cavus,M.,Fa. Post Direkt wrote: >> I process this >> >> ./hadoop jar ../../hadoopjar/hd.jar org.postdirekt.hadoop.WordCount >> gutenberg gutenberg-output >> >> I get this >> Dıd anyone know why I get this Error? >> >> 10/12/30 16:48:59 INFO security.Groups: Group mapping >> impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; >> cacheTimeout=300000 >> 10/12/30 16:49:01 INFO ipc.Client: Retrying connect to server: >> localhost/127.0.0.1:9001. Already tried 0 time(s). >> 10/12/30 16:49:02 INFO ipc.Client: Retrying connect to server: >> localhost/127.0.0.1:9001. Already tried 1 time(s). >> 10/12/30 16:49:03 INFO ipc.Client: Retrying connect to server: >> localhost/127.0.0.1:9001. Already tried 2 time(s). >> 10/12/30 16:49:04 INFO ipc.Client: Retrying connect to server: >> localhost/127.0.0.1:9001. Already tried 3 time(s). >> 10/12/30 16:49:05 INFO ipc.Client: Retrying connect to server: >> localhost/127.0.0.1:9001. Already tried 4 time(s). >> 10/12/30 16:49:06 INFO ipc.Client: Retrying connect to server: >> localhost/127.0.0.1:9001. Already tried 5 time(s). >> 10/12/30 16:49:07 INFO ipc.Client: Retrying connect to server: >> localhost/127.0.0.1:9001. Already tried 6 time(s). >> 10/12/30 16:49:08 INFO ipc.Client: Retrying connect to server: >> localhost/127.0.0.1:9001. Already tried 7 time(s). >> 10/12/30 16:49:09 INFO ipc.Client: Retrying connect to server: >> localhost/127.0.0.1:9001. Already tried 8 time(s). >> 10/12/30 16:49:10 INFO ipc.Client: Retrying connect to server: >> localhost/127.0.0.1:9001. Already tried 9 time(s). >> Exception in thread "main" java.net.ConnectException: Call to >> localhost/127.0.0.1:9001 failed on connection exception: >> java.net.ConnectException: Connection refused >> at org.apache.hadoop.ipc.Client.wrapException(Client.java:932) >> at org.apache.hadoop.ipc.Client.call(Client.java:908) >> at >> org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:198) >> at $Proxy0.getProtocolVersion(Unknown Source) >> at >> org.apache.hadoop.ipc.WritableRpcEngine.getProxy(WritableRpcEngine.java:228) >> at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:224) >> at org.apache.hadoop.mapreduce.Cluster.createRPCProxy(Cluster.java:82) >> at org.apache.hadoop.mapreduce.Cluster.createClient(Cluster.java:94) >> at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:70) >> at org.apache.hadoop.mapreduce.Job.<init>(Job.java:129) >> at org.apache.hadoop.mapreduce.Job.<init>(Job.java:134) >> at org.postdirekt.hadoop.WordCount.main(WordCount.java:19) >> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >> at >> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) >> at >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) >> at java.lang.reflect.Method.invoke(Method.java:597) >> at org.apache.hadoop.util.RunJar.main(RunJar.java:192) >> Caused by: java.net.ConnectException: Connection refused >> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) >> at >> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) >> at >> org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206) >> at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:373) >> at >> org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:417) >> at org.apache.hadoop.ipc.Client$Connection.access$1900(Client.java:207) >> at org.apache.hadoop.ipc.Client.getConnection(Client.java:1025) >> at org.apache.hadoop.ipc.Client.call(Client.java:885) >> ... 15 more >> > This is the most common issue occured after configuring Hadoop Cluster. > > Reason : > > 1. Your NameNode, JobTracker is not running. Verify through Web UI and jps > commands. > 2. DNS Resolution. You must have IP hostname enteries if all nodes in > /etc/hosts file. > > > > Best Regards > > Adarsh Sharma
