Re: How to perform Range Queries in Cassandra

2014-07-06 Thread Rameez Thonnakkal
Won't the performeance improve significantly if you increase the number of nodes even in a commodity hardware profile. On 5 Jul 2014 01:38, Jens Rantil jens.ran...@tink.se wrote: Hi Mike, To learn get subsecond performance on your queries using _any_ database you need to use proper indexing.

Re: How to perform Range Queries in Cassandra

2014-07-06 Thread Jens Rantil
Ramirez, If you partition your data correctly speed will be ~proportional. But there's always an upper limit - a slow range query that executes on a single node (using cluster key) will always be a slow. Cheers, Jens — Sent from Mailbox On Sun, Jul 6, 2014 at 8:04 AM, Rameez Thonnakkal

Best practice to store large keys (= 64 KByte)

2014-07-06 Thread Andreas Wagner
Hi Cassandra users, I'm wondering if there are any best practices to use keys (= 64 KByte). I'm aware that there is a Cassandra restriction for this [1]. However, my application requires that some keys may be = 64 KByte. I'm currently trying a simple hash-table solution: //key BLOB may be =

Re: Why is yum pulling in open JDK ?

2014-07-06 Thread Patricia Gorla
Wim, openjdk Java is a dependency of Cassandra, so if you do not have Java already installed on your computer, yum will automatically do so. The Oracle Java JVM must be installed separately. dsc20, cassandra20 The first installation target is for Datastax Community version 2.0, while the