I've followed carefully the instructions on http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_%28Single-Node_Cluster%29, but the task fails with the following stack trace :
08/05/13 19:16:26 INFO mapred.JobClient: map 100% reduce 0% 08/05/13 19:18:55 INFO mapred.JobClient: Task Id : task_200805131750_0005_m_000001_0, Status : FAILED Map output lost, rescheduling: getMapOutput(task_200805131750_0005_m_000001_0,0) failed : org.apache.hadoop.util.DiskChecker$DiskErrorException: Could not find task_200805131750_0005_m_000001_0/file.out.index in any of the configured local directories at org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.getLocalPathToRead(LocalDirAllocator.java:359) at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathToRead(LocalDirAllocator.java:138) at org.apache.hadoop.mapred.TaskTracker$MapOutputServlet.doGet(TaskTracker.java:2253) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:427) at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:475) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567) at org.mortbay.http.HttpContext.handle(HttpContext.java:1565) at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:635) at org.mortbay.http.HttpContext.handle(HttpContext.java:1517) at org.mortbay.http.HttpServer.service(HttpServer.java:954) at org.mortbay.http.HttpConnection.service(HttpConnection.java:814) at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:981) at org.mortbay.http.HttpConnection.handle(HttpConnection.java:831) at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244) at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357) at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534) My hadoop-site.xml file is as follows : <?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>localhost:54310</value> </property> <property> <name>mapred.job.tracker</name> <value>localhost:54311</value> </property> <property> <name>hadoop.tmp.dir</name> <value>tmp_storage</value> </property> <property> <name>dfs.replication</name> <value>1</value> </property> <property> <name>mapred.map.tasks.speculative.execution</name> <value>false</value> </property> <property> <name>mapred.reduce.tasks.speculative.execution</name> <value>false</value> </property> </configuration> Any happen would be appreciated. Thanks Shimon