-Re: CopyTable MR job hangs
Eran Kutner 2011-03-16, 13:12
Double thanks (one for each reply) J-D, I'll use distcp as you suggest.
On Tue, Mar 15, 2011 at 19:10, Jean-Daniel Cryans <[EMAIL PROTECTED]>wrote:
> Strangely enough I did answer that question the day you sent it but it
> doesn't show up on the mailing list aggregators even tho gmail marks
> it as sent... anyways here's what I said:
> It won't work because those versions aren't wire-compatible.
> What you can do instead is doing an Export, distcp the files, then do
> an Import. If the hadoop versions are different, use the hftp
> interface like the distcp documentation recommends.
> On Tue, Mar 15, 2011 at 1:11 AM, Eran Kutner <[EMAIL PROTECTED]> wrote:
> > No idea anyone?
> > -eran
> > On Wed, Mar 2, 2011 at 16:40, Eran Kutner <[EMAIL PROTECTED]> wrote:
> >> Hi,
> >> I'm trying to copy data from an older cluster using 0.89 (CDH3b3) to a
> >> one using 0.91 (CDH3b4) using the CopyTable MR job but it always hangs
> >> "map 0% reduce 0%" until eventually the job is killed by Hadoop for not
> >> responding after 600 seconds.
> >> I verified that it works fine when copying from one table to another on
> >> same cluster and I verified that the servers in the source cluster have
> >> network access to those in the destination cluster.
> >> Any idea what could be causing it?
> >> -eran