Please also indicate your exact Hadoop version in use. On Fri, Mar 28, 2014 at 9:04 AM, haihong lu <ung3...@gmail.com> wrote: > dear all: > > I had a problem today, when i executed the command "mapred job > -list" on a slave, an error came out. show the message as below: > > 14/03/28 11:18:47 INFO Configuration.deprecation: session.id is deprecated. > Instead, use dfs.metrics.session-id > 14/03/28 11:18:47 INFO jvm.JvmMetrics: Initializing JVM Metrics with > processName=JobTracker, sessionId= > Exception in thread "main" java.lang.NullPointerException > at org.apache.hadoop.mapreduce.tools.CLI.listJobs(CLI.java:504) > at org.apache.hadoop.mapreduce.tools.CLI.run(CLI.java:312) > 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) > > when i executed the same command yesterday, it was ok. > Thanks for any help
-- Harsh J