Re: [EXTERNAL] Cassandra vs MySQL

ce. > > > > Personally, I hope to never have to use/support MySQL again, and I love > working with Cassandra. But, Cassandra is not the choice for all data > problems. > > > > > > Sean Durity > > > > *From:* Oliver Ruebenacker [mailto:cur...@gmai

Cassandra vs MySQL

and Cassandra, but most of them seem to be five years old or older. Is there some good more recent material? Thanks! Best, Oliver -- Oliver Ruebenacker Senior Software Engineer, Diabetes Portal <http://www.type2diabetesgenetics.org/>, Broad Institute <http://www.broadinstitute.org/>

Re: Filling in the blank To Do sections on the Apache Cassandra web site

pair.html > > > > http://cassandra.apache.org/doc/latest/operating/hints.html > > > > http://cassandra.apache.org/doc/latest/operating/backups.html > > > > http://cassandra.apache.org/doc/latest/operating/bulk_loading.html > > > > http://cassandra.apache.org/doc

Re: Add column if it does not exist?

. > > Another thing that you can try is the use the describe table query to get > the table schema and parse it. Once done you can check whether column > exists or not. > > > With Regards > Irtiza Ali > > On 6 Feb 2018 21:35, "Oliver Ruebenacker" wrote: > >

Re: Add column if it does not exist?

run the alter table >> command and it shouldn't be an issue if its there. >> >> -- >> Rahul Singh >> rahul.si...@anant.us >> >> Anant Corporation >> >> On Feb 5, 2018, 4:15 PM -0500, Oliver Ruebenacker , >> wrote: >> >> >>

Re: Add column if it does not exist?

hul Singh > rahul.si...@anant.us > > Anant Corporation > > On Feb 5, 2018, 4:15 PM -0500, Oliver Ruebenacker , > wrote: > > > Hello, > > What's the easiest way to add a column to a table but only if it does > not exist? Thanks! > > Best, Oliver >

Add column if it does not exist?

Hello, What's the easiest way to add a column to a table but only if it does not exist? Thanks! Best, Oliver -- Oliver Ruebenacker Senior Software Engineer, Diabetes Portal <http://www.type2diabetesgenetics.org/>, Broad Institute <http://www.broadinstitute.org/>

Indexing for lots of numbers

way to enable this? A secondary index for each number column? Would I have to obtain all columns that satisfy one condition and filter them down, or is there a better way? Does Cassandra support finding out which index best to start with? Thanks! Best, Oliver -- Oliver Ruebenacker Senio

DataStax Java driver QueryBuilder: CREATE table?

Hello, I'm using the DataStax Java Driver, which has a QueryBuilder class to construct CQL statements. I can see how to build SELECT, INSERT, TRUNCATE etc statements, but I can't find how to build a CREATE statement. Am I missing something? Thanks! Best, Oliver

Re: run Cassandra on physical machine

re,8 ssd disks. > Can we run 8 cassandra instance in the same machine within one rack with > different port? > > Could anyone please advise? > > Thanks, > Peng Xiao > -- Oliver Ruebenacker Senior Software Engineer, Diabetes Portal <http://www.type2diabetesgenetics.org/>, Broad Institute <http://www.broadinstitute.org/>

Re: Executing a check before replication / manual replication

ised and someone is > executing modification via cqlsh ? > > is there a posibility on Cassandra to execute a custom check / Hook > before replication ? > > is there a posibilty to execute a manual replication between node ? > >> > > > -- > > Best Regards. &

MapReduce Integration?

m not sure what is meant by "integration". Any pointers? Thanks! Best, Oliver -- Oliver Ruebenacker Solutions Architect at Altisource Labs <http://www.altisourcelabs.com/> Be always grateful, but never satisfied.