Re: What are some use-cases for JOINs?

2016-10-20 Thread F21
P.S. I meant to say normalizing rather than de-normalizing. On 21/10/2016 10:36 AM, F21 wrote: Hey all, Normally, rather than de-normalizing my data, I prefer to have the data duplicated in 2 tables. With transactions, it is quite simple to ensure atomic updates to those 2 tables (especially

What are some use-cases for JOINs?

2016-10-20 Thread F21
Hey all, Normally, rather than de-normalizing my data, I prefer to have the data duplicated in 2 tables. With transactions, it is quite simple to ensure atomic updates to those 2 tables (especially for read-heavy apps). This also makes things easier to query and avoids the memory limits of

Re: Scanning big region parallely

2016-10-20 Thread Vivek Paranthaman
Hi, How to get the Schema out of Hbase using Phoenix driver? metadata.getSchemas() produce.. http://stackoverflow.com/questions/40123547/phoenixioexception-nomethodexception-deferredfileoutputstramstring-string-fi On Thu, Oct 20, 2016 at 11:31 AM, Sanooj Padmakumar wrote: >

Re: Scanning big region parallely

2016-10-20 Thread Sanooj Padmakumar
Hi James, We are loading data from Phoenix tables into in-memory database. Based on the query we are finding the number of phoenix input splits (similar to what happens inside phoenix MR) and loads the data into in-memory database in parallel. So we are looking for ways to further parallelize the