Hi Wei - In general, settings changes aren't applied until the hadoop daemons are restarted. Sounds like someone enabled permissions previously, but they didn't take hold until you rebooted your cluster.
cheers, -James On Mon, Apr 25, 2011 at 1:19 AM, Peng, Wei <wei.p...@xerox.com> wrote: > I forgot to mention that the hadoop was running fine before. > However, after it crashed last week, the restarted hadoop cluster has > such permission issues. > So that means the settings are still as same as before. > Then what would be the cause? > > Wei > > -----Original Message----- > From: James Seigel [mailto:ja...@tynt.com] > Sent: Sunday, April 24, 2011 5:36 AM > To: common-user@hadoop.apache.org > Subject: Re: HDFS permission denied > > Check where the hadoop tmp setting is pointing to. > > James > > Sent from my mobile. Please excuse the typos. > > On 2011-04-24, at 12:41 AM, "Peng, Wei" <wei.p...@xerox.com> wrote: > > > Hi, > > > > > > > > I need a help very bad. > > > > > > > > I got an HDFS permission error by starting to run hadoop job > > > > org.apache.hadoop.security.AccessControlException: Permission denied: > > > > user=wp, access=WRITE, inode="":hadoop:supergroup:rwxr-xr-x > > > > > > > > I have the right permission to read and write files to my own hadoop > > user directory. > > > > It works fine when I use hadoop fs -put. The job input and output are > > all from my own hadoop user directory. > > > > > > > > It seems that when a job starts running, some data need to be written > > into some directory, and I don't have the permission to that > directory. > > It is strange that the inode does not show which directory it is. > > > > > > > > Why does hadoop write something to a directory with my name secretly? > Do > > I need to be set a particular user group? > > > > > > > > Many Thanks.. > > > > > > > > Vivian > > > > > > > > > > >
