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From "Ramya R (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5997) Many test jobs write to HDFS under /
Date Tue, 09 Jun 2009 11:42:08 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12717650#action_12717650
] 

Ramya R commented on HADOOP-5997:
---------------------------------

testmapredsort tries to create /tmp. TestDFSIO - /benchmarks/TestDFSIO. nnbench - /benchmarks/NNBench

Below is the exception thrown by the above test jobs:
{noformat}
java.io.IOException: org.apache.hadoop.security.AccessControlException: Permission denied:
user=Y, access=WRITE, inode="":X:X:rwxr-xr-x
        at org.apache.hadoop.fs.TestDFSIO.createControlFile(TestDFSIO.java:126)
        at org.apache.hadoop.fs.TestDFSIO.main(TestDFSIO.java:351)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
        at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
        at org.apache.hadoop.test.AllTestDriver.main(AllTestDriver.java:81)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
{noformat}


> Many test jobs write to HDFS under /
> ------------------------------------
>
>                 Key: HADOOP-5997
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5997
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 0.20.0
>            Reporter: Ramya R
>             Fix For: 0.20.1
>
>
> Many test jobs such as testmapredsort, TestDFSIO and nnbench try to write to HDFS under
root. 
> If a user 'X' brings up the cluster and gives full access to user 'Y' under /user/Y,
user Y's test jobs still will not run because they demand access to / which cannot be granted.
Such jobs should be modified to write their temp outputs under /user/Y and not directly under
/

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