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problem in moving the input text file from file system to hdfs dfs file system with following comman

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problem in moving the input text file from file system to hdfs dfs file system with following comman

Explorer

1) [cloudera@localhost ~]$ sudo -u hdfs hdfs dfs -put /home/cloudera/ipf.txt /inputnew/
put: `/home/cloudera/ipf.txt': No such file or directory
2) [cloudera@localhost ~]$ hdfs dfs -put /home/cloudera/ipf.txt /inputnew/
put: Permission denied: user=cloudera, access=WRITE, inode="/inputnew":hdfs:supergroup:drwxr-xr-x

3) [cloudera@localhost ~]$ sudo -u cloudera hdfs dfs -put /home/cloudera/ipf.txt /inputnew/
put: Permission denied: user=cloudera, access=WRITE, inode="/inputnew":hdfs:supergroup:drwxr-xr-x

6 ACCEPTED SOLUTIONS

Accepted Solutions

Re: problem in moving the input text file from file system to hdfs dfs file system with following co

Explorer
thank u,its working

Re: Excution of the following command gives warning and not executed

Super Collaborator

@subbu You are doing the same error all the time.

 

In order to write or read from and to the jdfs the user running the command need permissions.

 

You can solve this by always running with the super user "hdfs" and in order to do that you need to add for you command sudo -u hdfs, so your command should be :

 

sudo -u hdfs hadoop jar /home/cloudera/WordCount.jar WordCount /inputnew/inputfile.txt /outputnew

 

or as i see all the time you are running with cloudera user so you need to change the owner of / to cloudera or you can change the permissions to the root folder.

 

so:

 

1- use the super user: 

 

sudo -u hdfs hadoop jar /home/cloudera/WordCount.jar WordCount /inputnew/inputfile.txt /outputnew

 

2- change root dir to cloudera-scm:

 

sudo -u hdfs  hdfs -chown -R cloudera /

then run:

hadoop jar /home/cloudera/WordCount.jar WordCount /inputnew/inputfile.txt /outputnew

 

 

 

3- change the permissions:

 

sudo -u hdfs  hdfs -chmod -R 777   / then run:

 

hadoop jar /home/cloudera/WordCount.jar WordCount /inputnew/inputfile.txt /outputnew

 

 

 

Re: Excution of the following command gives warning and not executed

Explorer

sir while i am trying to exucute this getting error

cloudera@localhost ~]$ sudo -u hdfs hdfs -chown -R cloudera /
Unrecognized option: -chown
Could not create the Java virtual machine.

Re: Excution of the following command gives warning and not executed

Super Collaborator
sudo -u hdfs hdfs dfs -chown -R cloudera /

Re: Excution of the following command gives warning and not executed

Explorer

thank u very much sir,its working and i am able run and got an output also

 

Re: Excution of the following command gives warning and not executed

Explorer
While executing this command I am getting error as
[cloudera@localhost ~]$ hadoop jar /home/cloudera/WordCount.jar WordCount /inputnew/inputfile.txt /op
18/04/22 07:40:40 INFO ipc.Client: Retrying connect to server: localhost.localdomain/127.0.0.1:8021. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
16 REPLIES 16
Highlighted

Re: problem in moving the input text file from file system to hdfs dfs file system with following co

Super Collaborator

1) [cloudera@localhost ~]$ sudo -u hdfs hdfs dfs -put /home/cloudera/ipf.txt /inputnew/
put: `/home/cloudera/ipf.txt': No such file or directory

 

The file /home/cloudera/ipf.txt doesn't exist in you local host, you can check by ll /home/cloudera/

 

Below you are not using the sudo -u hdfs as you used in the above command.

 

** you faced the same issue in another post.

 

Please use sudo -u hdfs hdfs dfs -put /home/cloudera/ipf.txt /inputnew/
2) [cloudera@localhost ~]$ hdfs dfs -put /home/cloudera/ipf.txt /inputnew/
put: Permission denied: user=cloudera, access=WRITE, inode="/inputnew":hdfs:supergroup:drwxr-xr-x

3) [cloudera@localhost ~]$ sudo -u cloudera hdfs dfs -put /home/cloudera/ipf.txt /inputnew/
put: Permission denied: user=cloudera, access=WRITE, inode="/inputnew":hdfs:supergroup:drwxr-xr-x

Re: problem in moving the input text file from file system to hdfs dfs file system with following co

Explorer

actually the txt file is already there in the folder and i am issuing the correct command but still i getting error.can u suggest me a solution

 

Re: problem in moving the input text file from file system to hdfs dfs file system with following co

Super Collaborator
PLease send me the output of the ll command

Re: problem in moving the input text file from file system to hdfs dfs file system with following co

Explorer

put: Permission denied: user=cloudera, access=WRITE, inode="/inputnew":hdfs:supergroup:drwxr-xr-x

Re: problem in moving the input text file from file system to hdfs dfs file system with following co

Expert Contributor

1) User hdfs does not have access to the /home/cloudera directory

2) and 3) is actually the same because in both cases you try to upload the file as user cloudera.

 

You have two options:

1) grant read permissions to hdfs user in /home/cloudera and all sub-contents (directory access require also execute permission)

2) grant write permissions in "/inputnew/" directory in HDFS , to "cloudera" user.

example: sudo -u hdfs hdfs dfs -chown cloudera /inputnew

 

There are multiple ways to grant permissions (e.g. using ACLs), but keep it simple.

Re: problem in moving the input text file from file system to hdfs dfs file system with following co

Explorer
how to give permission to cloudera

Re: problem in moving the input text file from file system to hdfs dfs file system with following co

Expert Contributor
Use the example I wrote above. It will change the owner of /inputnew directory in hdfs to "cloudera"

sudo -u hdfs hdfs dfs -chown cloudera /inputnew

Re: problem in moving the input text file from file system to hdfs dfs file system with following co

Explorer
thank u,its working

Excution of the following command gives warning and not executed

Explorer

hadoop jar /home/cloudera/WordCount.jar WordCount /inputnew/inputfile.txt /outputnew

 

error message is:

[cloudera@localhost ~]$ hadoop jar /home/cloudera/WordCount.jar WordCount /inputnew/inputfile.txt /outputnew
18/04/18 07:57:24 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
18/04/18 07:57:25 INFO input.FileInputFormat: Total input paths to process : 1
18/04/18 07:57:25 INFO mapred.JobClient: Running job: job_201804180742_0002
18/04/18 07:57:26 INFO mapred.JobClient: map 0% reduce 0%
18/04/18 07:57:36 INFO mapred.JobClient: Task Id : attempt_201804180742_0002_m_000002_0, Status : FAILED
org.apache.hadoop.security.AccessControlException: Permission denied: user=cloudera, access=WRITE, inode="/":hdfs:supergroup:drwxr-xr-x
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:224)
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:204)
at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:149)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkPermission(FSNamesystem.java:4705)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkPermission(FSNamesystem.java:4687)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkAncestorAccess(FSNamesystem.java:4661)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInternal(FSNamesystem.java:3032)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInt(FSNamesystem.java:2996)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:2977)