Arber,
/tmp is cleared when you reboot your machine and I think the OS reclaims it
once in a while (not sure). You should change that config ASAP. Is there a
particular reason why you want to use HBase in standalone?
Sorry for your data.
J-D
On Mon, Jul 21, 2008 at 2:38 PM, Yabo-Arber, Xu <[EMAIL PROTECTED]> wrote:
> Thanks for your reply, J-D. There is no such file hbase.version under the
> hbase root directory, and this morning i found something even worse
> happened. The data under hbase root directory ( i use the default
> /tmp/hbase-{user.home}/root ) disappeared......originally there was a
> folder
> corresponding to each table and i guess most of the data are physically
> stored there.
>
> This is not the first time happening to me. Last time similar things
> happened, and i addressed it using a naive way without thinking too much(
> re-building the whole database ) and then it runs well for around a week,
> and now it cames again. Do you have any idea what happened to the data?
> Would it be because i use the /tmp directory which happened to be modified
> by the system?
>
>
>
> On Mon, Jul 21, 2008 at 7:58 AM, Jean-Daniel Cryans <[EMAIL PROTECTED]>
> wrote:
>
> > Arber,
> >
> > When the Master starts, it checks on the filesystem for a file named
> > "hbase.version" in your HBase root folder. If the version of your HBase
> > distribution changed OR if the file is missing, it will throw the error
> you
> > see. I would advise confirming that the file is still there.
> >
> > Also, the migrate script first tries to connect to the Master to make
> sure
> > it is offline. It retries a couple of times (the error you see) then
> > proceed
> > to doing the migration.
> >
> > Hope it helps,
> >
> > J-D
> >
> > On Mon, Jul 21, 2008 at 5:17 AM, Yabo-Arber Xu <[EMAIL PROTECTED]
> >
> > wrote:
> >
> > > Greetings,
> > >
> > > I am right now using hbase in our project in "stand-alone" mode. It
> > worked
> > > well until today I found the following message in the log:
> > >
> > > 2008-07-21 01:16:38,564 FATAL org.apache.hadoop.hbase.HMaster: Not
> > starting
> > > HMaster because: org.apache.hadoop.hbase.FileSystemVersionException:
> File
> > > system needs to be upgraded. Run the '${HBASE_HOME}/bin/hbase migrate'
> > > script.
> > >
> > > I actually did not do any version change recently. But, anyway, i
> > followed
> > > the message and tried to do "hbase migrate", but it keeps showing me
> the
> > > following error:
> > >
> > > 08/07/21 02:11:51 INFO ipc.Client: Retrying connect to server:
> localhost/
> > > 127.0.0.1:60000. Already tried 1 time(s).
> > >
> > > The same error occurs when i try to do any query through hbase shell.
> > This
> > > is just wierd....I did not touch any part of the hbase, and the error
> > just
> > > sundenly came out. Any ideas why?
> > >
> > > Thanks for your help! The whole project is just stuck here by this
> error.
> > >
> > > Arber
> >
> >
>
