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From Bradford Stephens <bradfordsteph...@gmail.com>
Subject Re: org.apache.hadoop.hbase.TableNotFoundException: .META.
Date Tue, 22 Sep 2009 01:45:20 GMT
Hadoop's API is backwards compatible, your other apps should be just fine
with the upgrade, IIRC :)
Your issue was probably this one:
http://issues.apache.org/jira/browse/HBASE-1761

On Mon, Sep 21, 2009 at 5:29 PM, charles du <taiping.du@gmail.com> wrote:

> Thanks for the information.
>
> For my issue, I restarted hbase after I removed '/hbase' from hdfs.
> Everything works fine now except that I lost tables previously stored in
> hbase. Because my hbase shares a hdfs with a bunch of other apps, I cannot
> upgrade hadoop in near future.
>
> I am wondering what caused the problem, so I can try to avoid it. Thanks.
>
> Regards
>
> tp.
>
> On Mon, Sep 21, 2009 at 4:58 PM, Bradford Stephens <
> bradfordstephens@gmail.com> wrote:
>
> > If you can, upgrade to hadoop-0.20 and hbase-0.20 -- issues like this are
> > mostly resolved in those releases. This is probably related to a bug that
> > was fixed in that release.
> >
> >
> > On Mon, Sep 21, 2009 at 3:27 PM, charles du <taiping.du@gmail.com>
> wrote:
> >
> > > Hi:
> > >
> > > Here is another exception I got.
> > >
> > > NativeException:
> > org.apache.hadoop.hbase.client.RetriesExhaustedException:
> > > Trying to *contact region server null for region *, row '', but failed
> > > after
> > > 5 attempts.
> > >
> > > Thanks.
> > >
> > > Chuang
> > >
> > > On Mon, Sep 21, 2009 at 3:11 PM, charles du <taiping.du@gmail.com>
> > wrote:
> > >
> > > > Hi:
> > > >
> > > > I installed hbase 0.19.3. I tried a bunch of table creation/insertion
> a
> > > > while ago, and it worked.
> > > >
> > > > When I tried to create a table today, I got an error message
> > complaining
> > > > about no region server. Then, I restarted hbase, and got the
> following
> > > error
> > > > messages when I tried to list tables.
> > > >
> > > > Exceptions:
> > > > org.apache.hadoop.hbase.TableNotFoundException: .META.
> > > > org.apache.hadoop.hbase.TableNotFoundException: .META.
> > > > org.apache.hadoop.hbase.TableNotFoundException: .META.
> > > > org.apache.hadoop.hbase.TableNotFoundException: .META.
> > > > org.apache.hadoop.hbase.TableNotFoundException: .META.
> > > >
> > > > I checked the hbase directory under hdfs, and a directory ".META" is
> > > there,
> > > > and there is no file corruption.
> > > >
> > > > Could you please given me some hints on this issue? I ran hadoop
> > > rebalancer
> > > > over the past several days to balance hadoop files. Does it matter to
> > > hbase?
> > > >
> > > > Thanks.
> > > >
> > > >
> > > > --
> > > > tp
> > > >
> > >
> > >
> > >
> > > --
> > > tp
> > >
> >
> >
> >
> > --
> > http://www.roadtofailure.com -- The Fringes of Scalability, Social
> Media,
> > and Computer Science
> >
>
>
>
> --
> tp
>



-- 
http://www.roadtofailure.com -- The Fringes of Scalability, Social Media,
and Computer Science

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