hadoop - Mapreduce job is not running -


after installing , configuring hadoop 2.7.1 in pseudo-distributed mode running, can see in the

~$ jps 4825 jps 4345 namenode 4788 jobhistoryserver 4496 resourcemanager

than ran mapreduce example

  hadoop jar /usr/local/hadoop-2.7.1/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.1.jar pi 2 10

and execution frezees (?)

  number of maps  = 2 samples per map = 10 15/07/14 08:40:09 warn util.nativecodeloader: unable load native-hadoop          library platform... using builtin-java classes applicable wrote input map #0 wrote input map #1 starting job 15/07/14 08:40:13 info client.rmproxy: connecting resourcemanager @  master/10.0.0.4:8032 15/07/14 08:40:15 info input.fileinputformat: total input paths process :  2 15/07/14 08:40:15 info mapreduce.jobsubmitter: number of splits:2 15/07/14 08:40:16 info mapreduce.jobsubmitter: submitting tokens job:  job_1436860512406_0002 15/07/14 08:40:17 info impl.yarnclientimpl: submitted application   application_1436860512406_0002 15/07/14 08:40:17 info mapreduce.job: url track job:  http://master:8088/proxy/application_1436860512406_0002/ 15/07/14 08:40:17 info mapreduce.job: running job: job_1436860512406_0002

after 2 hours shows same..

please give idea..

thanks

here can see when execute jps command

~$ jps 4825 jps 4345 namenode 4788 jobhistoryserver 4496 resourcemanager

it not showing data-node. means data node down. need format , start again.

i having same issue on server. steps have followed is:

  1. stop-all.sh
  2. hadoop namenode -format
  3. hadoop datanode -format
  4. go actual directory hdfs namenode , datanode located. remove files using sudo rm -rf *
  5. remove files tmp directory e.g. app/hadoop/tmp/
  6. start hadoop using start-all.sh
  7. check if running or not using jps

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