>> when i run example wordcount i have problem like this : Is wordcount a hadoop example? or your code?
On 8/16/08, tran thien <[EMAIL PROTECTED]> wrote: > hi everyone, > i am using hadoop 0.17.1. > There are 2 node : one master(also slave) and one slave. > when i run example wordcount i have problem like this : > > 08/08/16 11:59:39 INFO mapred.JobClient: map 100% reduce 22% > 08/08/16 11:59:48 INFO mapred.JobClient: map 100% reduce 23% > 08/08/16 12:02:03 INFO mapred.JobClient: Task Id : > task_200808161130_0001_m_000007_0, Status : FAILED > Too many fetch-failures > > I config hadoop-site.xml like this : > > <?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://192.168.1.135:54310</value> > <description>The name of the default file system. A URI whose > scheme and authority determine the FileSystem implementation. The > uri's scheme determines the config property (fs.SCHEME.impl) naming > the FileSystem implementation class. The uri's authority is used to > determine the host, port, etc. for a filesystem.</description> > </property> > > <property> > <name>mapred.job.tracker</name> > <value>192.168.1.135:54311</value> > <description>The host and port that the MapReduce job tracker runs > at. If "local", then jobs are run in-process as a single map > and reduce task. > </description> > </property> > > <property> > <name>dfs.replication</name> > <value>2</value> > <description>Default block replication. > The actual number of replications can be specified when the file is > created. > The default is used if replication is not specified in create time. > </description> > </property> > > <property> > <name>mapred.map.tasks</name> > <value>11</value> > <description>The default number of map tasks per job. Typically set > to a prime several times greater than number of available hosts. > Ignored when mapred.job.tracker is "local". > </description> > </property> > > <property> > <name>mapred.reduce.tasks</name> > <value>7</value> > <description>The default number of reduce tasks per job. Typically > set > to a prime close to the number of available hosts. Ignored when > mapred.job.tracker is "local". > </description> > </property> > > <property> > <name>mapred.tasktracker.map.tasks.maximum</name> > <value>5</value> > <description>The maximum number of map tasks that will be run > simultaneously by a task tracker. > </description> > </property> > > <property> > <name>mapred.tasktracker.reduce.tasks.maximum</name> > <value>5</value> > <description>The maximum number of reduce tasks that will be run > simultaneously by a task tracker. > </description> > </property> > > </configuration> > > > I don't know why? Can you help me to resolve this problem? > > Thanks for the help in advance, > > Regards, > thientd > > > > -- Best regards, Edward J. Yoon [EMAIL PROTECTED] http://blog.udanax.org
