Your NFS mount is not letting NameNode lock a file. On Wed, Apr 13, 2011 at 12:38 PM, Jeffrey Wang <[email protected]> wrote:
> Hi, > > It's just in my home directory, which is an NFS mount. I moved it off NFS > and it seems to work fine. Is there some reason it doesn't work with NFS? > > -Jeffrey > > -----Original Message----- > From: Harsh J [mailto:[email protected]] > Sent: Wednesday, April 13, 2011 3:48 AM > To: [email protected] > Subject: Re: namenode format error > > Hello, > > On Wed, Apr 13, 2011 at 5:25 AM, Jeffrey Wang <[email protected]> wrote: > > Hey all, > > > > I'm trying to format my NameNode (I've done it successfully in the past), > but I'm getting a strange error: > > > > 11/04/12 16:47:32 INFO common.Storage: java.io.IOException: Input/output > error > > at sun.nio.ch.FileChannelImpl.lock0(Native Method) > > at sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:881) > > at java.nio.channels.FileChannel.tryLock(FileChannel.java:962) > > at > > What's your underlying FS of the ${dfs.name.dir} directories? Are they > NFS mounts? > > -- > Harsh J >
