Hi all, I had sent a query yesterday asking about the following error
WARN mapred.JobClient: Error reading task outputhttp://<machine.domainname>:50060/tasklog?plaintext=true&taskid=attempt_201001221644_0001_r_000001_2&filter=stdout INFO mapred.JobClient: Task Id : attempt_201001221644_0001_r_000001_2, Status : FAILED java.io.IOException: Task process exit with nonzero status of 1. at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:418) I found the reason for it at http://stackoverflow.com/questions/2091287/error-in-hadoop-mapreduce The answer is pasted below: One reason Hadoop produces this error is when the directory containing the log files becomes too full. This is a limit of the Ext3 filesystem which only allows a maximum of 32000 links per inode. Check how full your logs directory is in: {hadoop-home}/logs/userlogs A simple test for this problem is to just try and create a directory from the command-line for example: $ mkdir {hadoop-home}/logs//userlogs/testdir If you have too many directories in userlogs the OS should fail to create the directory and report there are too many. Thanks, Abhishek
