Re: Using Hbase as a transactional table

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 / Trafodio

Re: Using Hbase as a transactional table

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

Re: Using Hbase as a transactional table

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 > wrote: > > Hi, > > I need to explore if anyone has used Hbase as a transactional table to do > the processing that historically one has do

Re: Using Hbase as a transactional table

HBase itself doesn't offer transaction support. See the following related projects: http://yahoohadoop.tumblr.com/post/138682361161/high-availability-in-omid http://tephra.incubator.apache.org/ On Wed, Nov 23, 2016 at 8:27 AM, Mich Talebzadeh wrote: > Hi, > > I need to explore if anyone has u

RE: Using Hbase as a transactional table

Hi, The Apache Trafodion (incubating) project has built a scalable distributed transaction engine that integrates with HBase. See http://trafodion.apache.org/. Dave -Original Message- From: Mich Talebzadeh [mailto:mich.talebza...@gmail.com] Sent: Wednesday, November 23, 2016 8:27 AM To

Using Hbase as a transactional table

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 transact

Re: Writting bottleneck in HBase ?

bq. it calls the persistence method asynchronously Assuming the persistence method is still executing when the next threshold value is reached, do you have other threads to do persistence ? If so, how many threads can potentially run at the same time ? How many regions does the table have ? What

Writting bottleneck in HBase ?

Hi, I am new to HBase and I'm facing performance issues ... Short story : I want to persist 1000 values in HBase and it takes same time on a basic sandbox (HDP hadoop sandbox with single region server node) as it takes on our "production" cluster (that comprises 12 region server with higher c

Re: Rolling upgrade with coprocessors

Hi Albert, The way I've seen it working -- if you need to leave the table online -- is specifying the coprocessor in the hbase-site.xml of each region server and deploying the class to the table without a path (just the classname). Then, ensure your hbase-site.xml has the correct version for th

Re: hbase/spark - Delegation Token can be issued only with kerberos or web authentication

Hi Abel, Apologies, but I have been quite busy. The version I am using is here: https://github.com/barkhorn/SparkOnHBase. The tgt does look valid all in all, so I will revert back to my thought that there is an issue with the classpath on the submit. Thanks On 22 November 2016 at 10:14, Abel F