Hi Daniel, This can happen when "data" directory permissions are different from default (755). Possible reasons could be:
1. This directory already exists but created with different permissions . One scenario I can think of : The directory got created as part of build workflow, and the permissions are inherited from parent (C:\Hadoop) 2. The datanode service tried to create this (if it does not exist) and failed while setting permissions using "winutils". This case can be verified by looking at the DN log for FSShell exceptions To further investigate the root cause, it would help to find out who exactly created this directory. As Bikas mentioned, can you go through the logs for any exceptions related to permissions? Thanks, Ramya -----Original Message----- From: Bikas Saha [mailto:bi...@hortonworks.com] Sent: Monday, March 04, 2013 10:44 AM To: common-dev@hadoop.apache.org Subject: RE: Building branch-1-win, Starting Datanode on Windows I don't think you need to manually set permissions on Hadoop directories. Did you build the native windows executable in your build? Do you see any exceptions mentioning winutils? Bikas -----Original Message----- From: Daniel Jones [mailto:daniel.jo...@opencredo.com] Sent: Monday, March 04, 2013 6:56 AM To: common-dev@hadoop.apache.org Subject: Building branch-1-win, Starting Datanode on Windows Hi all, I've cloned the branch-1-win branch of Hadoop, and successfully managed to build it on my Windows 8 machine. When trying to start a datanode instance, I get the following error: 13/03/04 14:42:47 WARN datanode.DataNode: Invalid directory in dfs.data.dir: Incorrect permission for C:/hadoop/data, expected: rwxr-xr-x, while actual: ------rwx 13/03/04 14:42:47 ERROR datanode.DataNode: All directories in dfs.data.dir are invalid. The directory exists, and I've set "Allow all" to Everyone. Is this an issue that should exist in the Windows branch? Is there a way to massage Windows' file permissions into something the datanode will accept without further modifications to the code? Many thanks in advance. -- Daniel Jones - Consultant Open Credo Ltd - Excellence in Enterprise Application Development Mobile: +44 (0)79 8000 9153 Main: +44 (0)20 3393 8242 daniel.jo...@opencredo.com http://twitter.com/BinaryTweedNet www.opencredo.com Registered Office: 5-11 Lavington Street, London, SE1 0NZ Registered in UK. No 3943999 If you have received this e-mail in error please accept our apologies, destroy it immediately and it would be greatly appreciated if you notified the sender. It is your responsibility to protect your system from viruses and any other harmful code or device. We try to eliminate them from e-mails and attachments; but we accept no liability for any that remain. We may monitor or access any or all e-mails sent to us.
