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From Mohammad Tariq <donta...@gmail.com>
Subject Re: persistence in Hbase
Date Thu, 10 Jan 2013 22:51:55 GMT
Hello Anil,

      You are absolutely correct and I haven't faced any
such situation till date. I think I have made a controversial
statement via my reply :) Apologies for the mess.

Thank you

Warm Regards,
Tariq
https://mtariq.jux.com/


On Fri, Jan 11, 2013 at 4:08 AM, anil gupta <anilgupta84@gmail.com> wrote:

> Hi Mohammad,
>
> If the Write Ahead Log(WAL) is "turned on" then in **NO** case data should
> be lost. HBase is strongly-consistent. If you know of any case when WAL is
> turned on and data is lost then IMO that's a Critical bug in HBase.
>
> Thanks,
> Anil Gupta
>
> On Thu, Jan 10, 2013 at 7:37 AM, Mohit Anchlia <mohitanchlia@gmail.com
> >wrote:
>
> > Data also gets written in WAL. See:
> >
> > http://hbase.apache.org/book/perf.writing.html
> >
> > On Thu, Jan 10, 2013 at 7:36 AM, ramkrishna vasudevan <
> > ramkrishna.s.vasudevan@gmail.com> wrote:
> >
> > > Yes definitely you will get back the data.
> > >
> > > Please read the HBase Book that explains things in detail.
> > > http://hbase.apache.org/book.html.
> > >
> > > Regards
> > > Ram
> > >
> > >
> > > On Thu, Jan 10, 2013 at 8:48 PM, Panshul Gupta <panshul007@gmail.com>
> > > wrote:
> > >
> > >  > Hello,
> > > >
> > > > I was wondering if it is possible that I have data stored in Hbase
> > tables
> > > > on my 10 node cluster. I switch off (power down) my cluster. When I
> > power
> > > > up my cluster again, and run the HDFS and hadoop daemons, will the
> > Hbase
> > > > have my old data persisted in the form I left it?? or will I have to
> re
> > > > import all the data??
> > > >
> > > > Thankyou for the help.
> > > >
> > > > --
> > > > Regards,
> > > > Panshul.
> > > > http://about.me/panshulgupta
> > > >
> > >
> >
>
>
>
> --
> Thanks & Regards,
> Anil Gupta
>

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