Problem in Matlab + Hadoop Intergration
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Good Morning Sir, I tried to integrate matlab with hadoop and try to execute a simple program.But permission denied error is reported as shown in the attached fig.Could any one please help me to solve this issue.
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Kojiro Saito
2017-11-11
The error log says, when MATLAB submitted a job to YARN, /tmp/hadoop-yarn/staging/root/.staging directory in HDFS was used for a staging directory, but you don't have a permission of execution of the directory. Because you're using root user, but the permission of the HDFS's staging directory is nitw_viper_user:supergroup:drwx------. It means only nitw_viper_user user can Read/Write/Execute, and local root user cannot access to the directory.
Simply, changing the permission of staging directory in HDFS would solve this issue.
hadoop fs -chmod -R 777 /tmp/hadoop-yarn
4 个评论
Jyothi Alugolu
2017-11-19
Kojiro Saito
2017-11-19
The directory will be deleted after YARN job is finished or failed, so how about make directory beforehand?
hadoop fs -mkdir -p /tmp/hadoop-yarn
hadoop fs -chmod -R 777 /tmp/hadoop-yarn
then, do your MapReduce scripts.
Jyothi Alugolu
2017-11-20
lov kumar
2019-6-6
Can you please help me to fix this error:
Error using mapreduce (line 124)
The HADOOP job failed to submit. It is possible that there is some issue with the HADOOP configuration.
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