hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Bijieshan <bijies...@huawei.com>
Subject RE: terrible! I can't drop the table
Date Mon, 07 May 2012 14:29:39 GMT
> "I can lost the data , how to create the table with no data ?"
What's that mean? You can reset the whole cluster? Or just want to delete and re-create that
table?

-----Original Message-----
From: Jiajun Chen [mailto:cjjvictory@gmail.com] 
Sent: Monday, May 07, 2012 10:24 PM
To: user@hbase.apache.org
Subject: Re: terrible! I can't drop the table

I can lost the data , how to create the table with no data ?

On 7 May 2012 22:19, Doug Meil <doug.meil@explorysmedical.com> wrote:

>
> Because you did this... "hadoop fs -rmr /hbase/cjjWaitHash"
>
> ... your data is gone.
>
> Per...
>
> http://hbase.apache.org/book.html#trouble.namenode
>
>
> ... that's where StoreFiles are kept for that particular table.
>
>
> On 5/7/12 10:05 AM, "Jiajun Chen" <cjjvictory@gmail.com> wrote:
>
> > which temp directory ?
> > lose the data of all tables ?
> >
> >On 7 May 2012 22:01, Tom Brown <tombrown52@gmail.com> wrote:
> >
> >> I made a very similar mistake myself the other day when trying to reset
> >>my
> >> cluster.  What finally solved it was deleting the temp directory used
> >>by my
> >> data nodes (in my case I wanted to loose all my data, so it was ok to
> >> delete everything... In your case, you may have to figure out how to
> >>export
> >> some data first, as I don't know exactly what effect deleting that temp
> >> directory will have)
> >>
> >> Good luck!
> >>
> >> --Tom
> >>
> >> On Monday, May 7, 2012, Doug Meil wrote:
> >>
> >> >
> >> > Harsh pretty much summed it up already (e.g., "don't do that") but
> >>below
> >> > is some further reading of what just happened...
> >> >
> >> > http://hbase.apache.org/book.html#arch.catalog
> >> > http://hbase.apache.org/book.html#trouble.namenode
> >> >
> >> > ... META is just an HBase table under the covers. By deleting the
> >>table
> >> on
> >> > the HDFS filesystem, it did nothing with the table metadata in META.
> >> >
> >> >
> >> >
> >> >
> >> >
> >> > On 5/7/12 9:18 AM, "Harsh J" <harsh@cloudera.com <javascript:;>>
> >>wrote:
> >> >
> >> > >The drop is what you ought to have done first, before removing the
FS
> >> > >folder and the meta entries. It does all those actions for you. Why
> >> > >did you do it this way?
> >> > >
> >> > >Do you see the table still appearing in the list outputs? Can you
> >> > >provide us a paste bin link of:
> >> > >
> >> > >echo "scan '.META.'" | hbase shell | grep cjjWaitHash
> >> > >
> >> > >On Mon, May 7, 2012 at 6:44 PM, Jiajun Chen <cjjvictory@gmail.com
> >> <javascript:;>>
> >> > wrote:
> >> > >> I deleted the folder use bin/hadoop fs -rmr /hbase/cjjWaitHash
,and
> >> > >>deleted
> >> > >> the row with prefix cjjWaitHash in .META.
> >> > >> Now how can I drop the table cjjWaitHash ?
> >> > >
> >> > >
> >> > >
> >> > >--
> >> > >Harsh J
> >> > >
> >> >
> >> >
> >> >
> >>
> >
> >
> >
> >--
> >
>
>
--

Mime
View raw message