?output means the path to the history file of the job you want to view on hdfs.
Thanks, Zhijie ________________________________ From: mehdi benchoufi <[email protected]> Sent: Saturday, June 20, 2015 12:09 PM To: [email protected] Subject: accessing hadoop job history Hi, I ma new to Hadoop and when I run hadoop job -history output I get this Ignore unrecognized file: output Exception in thread "main" java.io.IOException: Unable to initialize History Viewer at org.apache.hadoop.mapreduce.jobhistory.HistoryViewer.<init>(HistoryViewer.java:90) at org.apache.hadoop.mapreduce.tools.CLI.viewHistory(CLI.java:487) at org.apache.hadoop.mapreduce.tools.CLI.run(CLI.java:330) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84) at org.apache.hadoop.mapred.JobClient.main(JobClient.java:1237) Caused by: java.io.IOException: Unable to initialize History Viewer at org.apache.hadoop.mapreduce.jobhistory.HistoryViewer.<init>(HistoryViewer.java:84) ... 5 more I checked the logs (history server logs, `mapred-*username*-historyserver-**.local.log` ), and there are empty. How can I solve it ? Best regards, Mehdi
