hadoop job -list deprecated

4
votes

I am learning hadoop using cloudera single node vm and I got through this line

hadoop job -list

I got a warning (Use of this script to execute mapred command is deprecated. Instead use the mapred command for it.) I'm aware that using it will work fine but I am a bit lost. Isn't mapred the old version of mapreduce? Is it the job (class ?) that is deprecated ? sorry for the ignorance. what is the best way to do list the running jobs?

A link or a reference would be highly appreciated. EDIT If the syntax is hadoop job [GENERIC_OPTIONS] [-submit <job-file>] | [-status <job-id>] | [-counter <job-id> <group-name> <counter-name>] | [-kill <job-id>] | [-events <job-id> <from-event-#> <#-of-events>] | [-history [all] <jobOutputDir>] | [-list [all]] | [-kill-task <task-id>] | [-fail-task <task-id>] | [-set-priority <job-id> <priority>] then why is it deprecated? Am I missing something?

2
apachehadoopmapreduce
this should help – GKV
Thanks, please see my edit, I do not understand what is wrong with the syntax. – Irene

2 Answers

6
votes

well here's the thing,

hadoop old version that supports mapred has this (hadoop job -list) command. old command list

and new version of hadoop does not support this functionality because of YARN. new command list

i think this command was available till 2.4 but from 2.6 they have removed it.( judging from the manuals)

1
votes

As I have just come across this question, and its only answer, which left me confused, I thought I should point out that the answer to these bits of the question

Isn't mapred the old version of mapreduce? Is it the job (class ?) that is deprecated ?

is that it is the use of hadoop itself in hadoop job -list that is deprecated.

So the correct invocation is now

mapred job -list