问题
I am trying to run a mapreduce example in hadoop. I am using version 2.7.2. I tried running
bin/hadoop jar libexec/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.2.jar grep input output 'dfs[a-z.]+'
and the mapreduce stuck at running job and does not advance any further.
it shows
How to resolve this?
回答1:
I got it guys. It as the space problem. My HDD is 500 GB capacity. The used space should not exceed 90%. In my case there was only 30GB left. I cleaned up some spce by deleting Apps and Files. Its running Good.
来源：https://stackoverflow.com/questions/37940030/hadoop-map-reduce-example-stuck-on-running-job