hadoop-general mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Gross, Danny" <Danny.Gr...@spansion.com>
Subject RE: problem with running WordCode v0 with a distributed operation
Date Tue, 30 Jun 2009 18:55:08 GMT
Hi CJ,

One of my CentOS systems was built with the full installation.  This
installed a base iptables ruleset (sorry, I didn't keep the output from
that).  All my other systems looked like this:

[root@msddl01 ~]# iptables --list
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

I cleared the iptables for my problem system with the following:

/sbin/iptables -P INPUT ACCEPT
/sbin/iptables -P OUTPUT ACCEPT
/sbin/iptables -P FORWARD ACCEPT
/sbin/iptables -Z
/sbin/iptables -F

Once that was done, my node responded to the cluster, accepted jobs,
etc.

One thing I'm not clear on from your description below:  Do your HDFS
and map/reduce management web interfaces come up once you start dfs and
mapred?

My habit is:

- hadoop namenode -format (1st time)
- start-dfs.sh
- start-mapred.sh
- Check HDFS web interface -- status of HDFS nodes. 
- Check map/reduce web interface -- status of task trackers.
- Make sure that both HDFS and map/reduce interfaces show as up and
running before kicking off jobs.  HDFS will go into standby mode, and
mapreduce will show initializing at times.

Hope it helps.

Best regards,

Danny

-----Original Message-----
From: C J [mailto:xine.jar@googlemail.com] 
Sent: Tuesday, June 30, 2009 12:25 PM
To: general@hadoop.apache.org
Subject: Re: problem with running WordCode v0 with a distributed
operation

Hi Danny,
can you be a bit more precise what was wrong in your iptable?
thank you

On Tue, Jun 30, 2009 at 5:30 PM, Gross, Danny
<Danny.Gross@spansion.com>wrote:

> Hello,
>
> I suggest that you check iptables on your systems.  At one time, one
of
> my nodes showed a similar error, and this was the culprit.
>
> Good luck,
>
> Danny
>
> -----Original Message-----
> From: C J [mailto:xine.jar@googlemail.com]
> Sent: Tuesday, June 30, 2009 2:15 AM
> To: general@hadoop.apache.org; C J
> Subject: problem with running WordCode v0 with a distributed operation
>
> Help help help,
>
>  I am a new user, it has been already 2-3 weeks that I am trying to
run
> Hadoop 0.18.3.
>
>
>  *My settings:*
>
>   1.
>
>   I am on LINUX
>   2.
>
>    Using the Java 1.6.0
>    3.
>
>   I have unpacked the hadoop-0.18.3 folder directly on the desktop
>
>
> *Working steps:*
>
>   1.
>
>   I have succeeded to run it on the local
>    2.
>
>   I went through the quick start tutorial and managed to operate
>
>   Hadoop in the standalone and the Pseudo-distributed motes
>    3.
>
>   I started going through the map/reduce tutorial and managed to
>
>   run the WordCount v1.0 with a standalone operation.
>
> *Current status:*
>
>   1.
>
>   I would like to run the WordCount v1.0 example on a distributed
> operation
>    2.
>
>   I went through the steps in the cluster setup tutorial and did the
>   following:
>
>
>   -
>
>   On a distant server I am running 4 virtual machines:
>
>   134.130.223.58:1
>
>   134.130.223.72:1
>
>   134.130.223.85:1
>
>   134.130.223.92:1
>   -
>
>   My own machine has the following ip address
>
>   134.130.222.54
>   -
>
>   The hadoop-en.sh file is the same on all the five machines:
>
>   *export HADOOP_HEAPSIZE=500*
>
>   *export JAVA_HOME="/usr/java/jdk1.6.0_14"*
>
>   *export HADOOP_NAMENODE_OPTS="-Dcom.sun.management.jmxremote
>   $HADOOP_NAMENODE_OPTS"*
>
>   *export
HADOOP_SECONDARYNAMENODE_OPTS="-Dcom.sun.management.jmxremote
>   $HADOOP_SECONDARYNAMENODE_OPTS"*
>
>   *export HADOOP_DATANODE_OPTS="-Dcom.sun.management.jmxremote *
>
>   *$HADOOP_DATANODE_OPTS"*
>
>   *export HADOOP_BALANCER_OPTS="-Dcom.sun.management.jmxremote *
>
>   *$HADOOP_BALANCER_OPTS"*
>
>   *export HADOOP_JOBTRACKER_OPTS="-Dcom.sun.management.jmxremote *
>
>   *$HADOOP_JOBTRACKER_OPTS"*
>
>   *export HADOOP_HOME="/root/Desktop/hadoop-0.18.3"*
>
>   *export HADOOP_VERSION="0.18.3"*
>
>   *export HADOOP_LOG_DIR=${HADOOP_HOME}/logs*
>   -
>
>   The hadoop-site.xml is the same on all the five machines:
>
>   *<?xml version="1.0"?>*
>
>   *<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>*
>
>   *<!-- Put site-specific property overrides in this file. -->*
>
>   *<configuration>*
>
>   * <property>*
>
>   * Hadoop Quickstart*
>
>   * Page 3*
>
>    * Copyright (c) 2007 The Apache Software Foundation. All rights
> reserved.*
>
>   * <name>fs.default.name</name>*
>
>   * <value>134.130.223.85:9000</value>*
>
>   * </property>*
>
>   * <property>*
>
>   * <name>mapred.job.tracker</name>*
>
>   * <value>134.130.223.58:1</value>*
>
>   * </property>*
>
>   * <property>*
>
>   * <name>dfs.name.dir</name>*
>
>   * <value>/root/Desktop/hadoop-0.18.3/logstina</value>*
>
>   * </property>*
>
>   * <property>*
>
>   * <name>dfs.data.dir</name>*
>
>   * <value>/root/Desktop/hadoop-0.18.3/blockstina</value>*
>
>   * </property>*
>
>   * <property>*
>
>   * <name>mapred.system.dir</name>*
>
>   * <value>systemtina</value>*
>
>   * </property>*
>
>   * <property>*
>
>   * <name>mapred.local.dir</name>*
>
>   * <value>/root/Desktop/hadoop-0.18.3/tempMapReducetina</value>*
>
>   * </property>*
>
>   *</configuration> *
>
>
>
>
>
>   -
>
>   The slaves file is the same on all five machines and contains:
>
>   134.130.223.72
>
>   134.130.222.54
>
>   134.130.223.92
>   -
>
>   from the Namenode machine 134.130.223.85 I have formatted a new
> namenode,
>   started the hdfs (bin/start-dfs.sh) and started the Map-reduce
>   (bin/start-mapred.sh)
>
>
>  *Problem:*
>
> Si      Since the jar file of the WordCount was already created (by
the
> local operation) in the folder
>
> us     usr/tina, I tried running directly the application similarly to
> local
> operation by typing
>
>   *$bin/hadoop jar usr/tina/wordcount.jar org.myorg.WordCount
> usr/tina/wordcount/input usr/tina/wordcount/output.*
>
>  Then I got the following error:
>
>
>
>  *09/06/29 19:38:05 WARN fs.FileSystem: "134.130.223.85:9000" is a
> deprecated filesystem name. Use "hdfs://134.130.223.85:9000/"
instead.*
>
> *09/06/29 19:38:06 INFO ipc.Client: Retrying connect to server: /
> 134.130.223.85:9000. Already tried 0 time(s).*
>
> *09/06/29 19:38:07 INFO ipc.Client: Retrying connect to server: /
> 134.130.223.85:9000. Already tried 1 time(s).*
>
> *09/06/29 19:38:08 INFO ipc.Client: Retrying connect to server: /
> 134.130.223.85:9000. Already tried 2 time(s).*
>
> *09/06/29 19:38:09 INFO ipc.Client: Retrying connect to server: /
> 134.130.223.85:9000. Already tried 3 time(s).*
>
> *09/06/29 19:38:10 INFO ipc.Client: Retrying connect to server: /
> 134.130.223.85:9000. Already tried 4 time(s).*
>
> *09/06/29 19:38:11 INFO ipc.Client: Retrying connect to server: /
> 134.130.223.85:9000. Already tried 5 time(s).*
>
> *09/06/29 19:38:12 INFO ipc.Client: Retrying connect to server: /
> 134.130.223.85:9000. Already tried 6 time(s).*
>
> *09/06/29 19:38:13 INFO ipc.Client: Retrying connect to server: /
> 134.130.223.85:9000. Already tried 7 time(s).*
>
> *09/06/29 19:38:14 INFO ipc.Client: Retrying connect to server: /
> 134.130.223.85:9000. Already tried 8 time(s).*
>
> *09/06/29 19:38:15 INFO ipc.Client: Retrying connect to server: /
> 134.130.223.85:9000. Already tried 9 time(s).*
>
> *java.lang.RuntimeException: java.net.ConnectException: Call to /
> 134.130.223.85:9000 failed on connection exception:
> java.net.ConnectException: Connection refused*
>
> *at
>
org.apache.hadoop.mapred.JobConf.getWorkingDirectory(JobConf.java:358)*
>
> *at
>
org.apache.hadoop.mapred.FileInputFormat.setInputPaths(FileInputFormat.j
> ava:377)
> *
>
> *at org.myorg.WordCount.main(WordCount.java:53)*
>
> *at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)*
>
> *at
>
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
> a:39)
> *
>
> *at
>
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
> Impl.java:25)
> *
>
> *at java.lang.reflect.Method.invoke(Method.java:597)*
>
> *at org.apache.hadoop.util.RunJar.main(RunJar.java:155)*
>
> *at org.apache.hadoop.mapred.JobShell.run(JobShell.java:54)*
>
> *at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)*
>
> *at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)*
>
> *at org.apache.hadoop.mapred.JobShell.main(JobShell.java:68)*
>
> *Caused by: java.net.ConnectException: Call to /134.130.223.85:9000
> failed
> on connection exception: java.net.ConnectException: Connection
refused*
>
> *at org.apache.hadoop.ipc.Client.wrapException(Client.java:743)*
>
> *at org.apache.hadoop.ipc.Client.call(Client.java:719)*
>
> *at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:216)*
>
> *at org.apache.hadoop.dfs.$Proxy0.getProtocolVersion(Unknown Source)*
>
> *at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:348)*
>
> *at
> org.apache.hadoop.dfs.DFSClient.createRPCNamenode(DFSClient.java:103)*
>
> *at org.apache.hadoop.dfs.DFSClient.<init>(DFSClient.java:172)*
>
> *at
>
org.apache.hadoop.dfs.DistributedFileSystem.initialize(DistributedFileSy
> stem.java:67)
> *
>
> *at
>
org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1339)*
>
> *at org.apache.hadoop.fs.FileSystem.access$300(FileSystem.java:56)*
>
> *at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1351)*
>
> *at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:213)*
>
> *at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:118)*
>
> *at
>
org.apache.hadoop.mapred.JobConf.getWorkingDirectory(JobConf.java:354)*
>
> *... 11 more*
>
> *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 sun.nio.ch.SocketAdaptor.connect(SocketAdaptor.java:100)*
>
> *at
>
org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:301)*
>
> *at
> org.apache.hadoop.ipc.Client$Connection.access$1700(Client.java:178)*
>
> *at org.apache.hadoop.ipc.Client.getConnection(Client.java:820)*
>
> *at org.apache.hadoop.ipc.Client.call(Client.java:705)*
>
> *... 23 more*
>
>
>
>
>  * Questions*
>
>   1.
>
>   Can someone help me in solving/debugging this problem?
>
>   P.S: I have tried to stop the HDFS with bin/stop-dfs.sh before
>
>   starting new ones.
>
>
>  Thank you,
>
> C.J
>

Mime
View raw message