I've been trying to run hadoop and other components like PIG.
I'm trying this tutorial: https://www.edureka.co/blog/pig-programming-create-your-first-apache-pig-script/
Everything is right, but when I run the script at step 2 it throws this error:
2018-01-09 13:47:20,682 [JobControl] INFO org.apache.hadoop.mapreduce.lib.jobcontrol.ControlledJob - PigLatin:output.pig got an error while submitting
org.apache.pig.backend.executionengine.ExecException: ERROR 2118: Input path does not exist: hdfs://localhost:9000/carlos/information.txt
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.getSplits(PigInputFormat.java:279)
at org.apache.hadoop.mapreduce.JobSubmitter.writeNewSplits(JobSubmitter.java:301)
at org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:318)
at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:196)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1290)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1287)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1698)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1287)
at org.apache.hadoop.mapreduce.lib.jobcontrol.ControlledJob.submit(ControlledJob.java:335)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.pig.backend.hadoop23.PigJobControl.submit(PigJobControl.java:128)
at org.apache.pig.backend.hadoop23.PigJobControl.run(PigJobControl.java:194)
at java.lang.Thread.run(Thread.java:748)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher$1.run(MapReduceLauncher.java:276)
Prior to step 1, you needed this command
hadoop fs –copyFromLocal /home/carlos/information.txt /carlos
However, this will copy your file to a file named /carlos on HDFS, if that directory doesn't already exist.
If you want /carlos to be a directory, you need to delete the file and make it
hadoop fs -rm /carlos
hadoop fs -mkdir /carlos
Also, trailing slashes should generally be used when copying files into a directory, like so
hadoop fs –copyFromLocal /home/carlos/information.txt /carlos/
You could also just make your Pig code load /carlos as the file. Even if it was a directory, this would still work to read all files in there