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From Ted Yu <ted...@yahoo.com.INVALID>
Subject Re: Using Hbase as a transactional table
Date Mon, 28 Nov 2016 22:36:34 GMT
Not sure if Transactions (beta) | Apache Phoenix is up to date.
Why not ask on Phoenix mailing list where you would get better answer(s) ?
Cheers
  
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Transactions (beta) | Apache Phoenix
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    On Monday, November 28, 2016 2:02 PM, Mich Talebzadeh <mich.talebzadeh@gmail.com>
wrote:
 

 Thanks Ted.

How does Phoenix provide transaction support?

I have read some docs but sounds like problematic. I need to be sure there
is full commit and rollback if things go wrong!

Also it appears that Phoenix transactional support is in beta phase.

Cheers



Dr Mich Talebzadeh



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On 23 November 2016 at 18:15, Ted Yu <yuzhihong@gmail.com> wrote:

> Mich:
> Even though related rows are on the same region server, there is no
> intrinsic transaction support.
>
> For #1 under design considerations, multi column family is one
> possibility. You should consider how the queries from RDBMS access the
> related data.
>
> You can also evaluate Phoenix / Trafodion which provides transaction
> support.
>
> Cheers
>
> > On Nov 23, 2016, at 9:19 AM, Mich Talebzadeh <mich.talebzadeh@gmail.com>
> wrote:
> >
> > Thanks all.
> >
> > As I understand Hbase does not support ACIC compliant transactions over
> > multiple rows or across tables?
> >
> > So this is not supported
> >
> >
> >  1. Hbase can support multi-rows transactions if the rows are on the
> same
> >  table and in the same RegionServer?
> >  2. Hbase does not support multi-rows transactions if the rows are in
> >  different tables but happen to be in the same RegionServer?
> >  3. If I migrated RDBMS transactional tables to the same Hbase table
> (big
> >  if) with different column familities will that work?
> >
> >
> > Design considerations
> >
> >
> >  1. If I have 4 big tables in RDBMS, some having in excess of 200
> columns
> >  (I know this is a joke), can they all go one-to-one to Hbase tables.
> Can
> >  some of these RDBMS tables put into one Hbase schema  with different
> column
> >  families.
> >  2. then another question. If I use hive tables on these hbase tables
> >  with large number of family columns, will it work ok?
> >
> > thanks
> >
> >  1.
> >
> >
> > Dr Mich Talebzadeh
> >
> >
> >
> > LinkedIn * https://www.linkedin.com/profile/view?id=
> AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw
> > <https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCd
> OABUrV8Pw>*
> >
> >
> >
> > http://talebzadehmich.wordpress.com
> >
> >
> > *Disclaimer:* Use it at your own risk. Any and all responsibility for any
> > loss, damage or destruction of data or any other property which may arise
> > from relying on this email's technical content is explicitly disclaimed.
> > The author will in no case be liable for any monetary damages arising
> from
> > such loss, damage or destruction.
> >
> >
> >
> >> On 23 November 2016 at 16:43, Denise Rogers <datagwal@aol.com> wrote:
> >>
> >> I would recommend MariaDB. HBase is not ACID compliant. MariaDB is.
> >>
> >> Regards,
> >> Denise
> >>
> >>
> >> Sent from mi iPad
> >>
> >>>> On Nov 23, 2016, at 11:27 AM, Mich Talebzadeh <
> mich.talebzadeh@gmail.com>
> >>> wrote:
> >>>
> >>> Hi,
> >>>
> >>> I need to explore if anyone has used Hbase as a transactional table to
> do
> >>> the processing that historically one has done with RDBMSs.
> >>>
> >>> A simple question dealing with a transaction as a unit of work (all or
> >>> nothing). In that case if any part of statement in batch transaction
> >> fails,
> >>> that transaction will be rolled back in its entirety.
> >>>
> >>> Now how does Hbase can handle this? Specifically at the theoretical
> level
> >>> if a standard transactional processing was migrated from RDBMS to Hbase
> >>> tables, will that work.
> >>>
> >>> Has anyone built  successful transaction processing in Hbase?
> >>>
> >>> Thanks
> >>>
> >>>
> >>> Dr Mich Talebzadeh
> >>>
> >>>
> >>>
> >>> LinkedIn * https://www.linkedin.com/profile/view?id=
> >> AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw
> >>> <https://www.linkedin.com/profile/view?id=
> AAEAAAAWh2gBxianrbJd6zP6AcPCCd
> >> OABUrV8Pw>*
> >>>
> >>>
> >>>
> >>> http://talebzadehmich.wordpress.com
> >>>
> >>>
> >>> *Disclaimer:* Use it at your own risk. Any and all responsibility for
> any
> >>> loss, damage or destruction of data or any other property which may
> arise
> >>> from relying on this email's technical content is explicitly
> disclaimed.
> >>> The author will in no case be liable for any monetary damages arising
> >> from
> >>> such loss, damage or destruction.
> >>
> >>
>


   
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