Question about counters read before write behavior

2017-09-17 Thread Paul Pollack
Hi, We're trying to confirm on a counter write that the entire partition is read from disk vs. just the row and column of the partition to increment. We've trade the code to this line

Stack overflow error with UDF using IBM JVM

2017-09-17 Thread Sumant Padbidri
I'm using Cassandra 3.11 right out of the box (i.e. all default parameters) with the IBM JRE. Using any UDF results in a stack overflow error. They work fine with the Oracle JVM. I've tried increasing some stack sizes (-Xss and -Xmso), but that does not help. Is there some configuration I'm

Re: Maturity and Stability of Enabling CDC

2017-09-17 Thread kurt greaves
I don't believe it's used by many, if any. it certainly hasn't had enough attention to determine it production ready, nor has it been out long enough for many people to be in a version where cdc is available. FWIW I've never even seen any inquiries about using it. On 17 Sep. 2017 13:18, "Michael

Re: Maturity and Stability of Enabling CDC

2017-09-17 Thread Michael Fong
Thanks for your reply. If anyone has tried out this new feature, perhaps he/she could answer this question: would multiple copies of CDC be sent to downstream (i.e., Kafka) when all nodes have enabled cdc? Regards, On Mon, Sep 18, 2017 at 6:59 AM, kurt greaves wrote: >

Re: Maturity and Stability of Enabling CDC

2017-09-17 Thread Jeff Jirsa
Haven't tried out CDC, but the answer based on the design doc is yes - you have to manually dedup CDC at the consumer level -- Jeff Jirsa > On Sep 17, 2017, at 6:21 PM, Michael Fong wrote: > > Thanks for your reply. > > > If anyone has tried out this new

Wide rows splitting

2017-09-17 Thread Adam Smith
Dear community, I have a table with inlinks to URLs, i.e. many URLs point to http://google.com, less URLs point to http://somesmallweb.page. It has very wide and very skinny rows - the distribution is following a power law. I do not know a priori how many columns a row has. Also, I can't