Hive query error : java.io.ioexception error=13 permission denied - hadoop

Question

I have a table report which has the fields id,country,service,amount,count. When I try to execute the following query in hive :
select * from report
I get the proper data from hive. But when I specify the column name in the select statement :
select service from report
I get the following exception :
java.io.IOException: Cannot run program "/home/biadmin/hadoop/bin/hadoop" (in directory "/root"): error=13, Permission denied
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1041)
at java.lang.Runtime.exec(Runtime.java:617)
at java.lang.Runtime.exec(Runtime.java:450)
at org.apache.hadoop.hive.ql.exec.mr.MapRedTask.execute(MapRedTask.java:262)
at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:153)
at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:85)
at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1503)
at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1270)
at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1088)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:911)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:901)
at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:268)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:220)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:423)
at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:792)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:686)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:625)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
Caused by: java.io.IOException: error=13, Permission denied
at java.lang.UNIXProcess.forkAndExec(Native Method)
at java.lang.UNIXProcess.<init>(UNIXProcess.java:135)
at java.lang.ProcessImpl.start(ProcessImpl.java:130)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1022)
... 21 more
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask
I get this error in tandem, means sometimes I get it and sometimes it works fine. I tried adding the following in hive-site.xml and hdfs-site.xml, but still getting the same issue.
hive-site.xml
<property>
<name>hive.cli.print.current.db</name>
<value>true</value>
</property>
hdfs-site.xml
<property>
<name>dfs.permissions</name>
<value>false</value>
</property>
Is there any way I can avert this problem on a permanent basis. Thanks all.

Answer 1

The problem was simple... Assuming my hadoop installation was in hduser
I used the command :
su hduser
This doesn't set all the parameters and opens in /root home folder. Hence, there are permission discrepancy.
Hence, use the command :
su - hduser
This sets the required parameters and opens directly in hduser's home. This doesn't give the error.
Regarding the error at tandem, I used to directly enter the server using hduser user which didn't give the error. But entering the server through root and then switching user gave error.