Re: cassandra node jvm stall intermittently

2015-03-07 Thread Jason Wee
Hi Jan, thanks for your time to prepare the question and answer below, - How many nodes do you have on the ring ? 12 - What is the activity when this occurs - reads / writes/ compactions ? This cluster has a lot of writes and read. off peak period, ops center shown cluster wr

Re: cassandra node jvm stall intermittently

2015-03-07 Thread Ali Akhtar
What version are you running? On Sat, Mar 7, 2015 at 2:14 PM, Jason Wee wrote: > > Hi Jan, thanks for your time to prepare the question and answer below, > > >- How many nodes do you have on the ring ? >12 > >- What is the activity when this occurs - reads / writes/ compactions >

Re: cassandra node jvm stall intermittently

2015-03-07 Thread Jason Wee
hey Ali, 1.0.8 On Sat, Mar 7, 2015 at 5:20 PM, Ali Akhtar wrote: > What version are you running? > > On Sat, Mar 7, 2015 at 2:14 PM, Jason Wee wrote: > >> >> Hi Jan, thanks for your time to prepare the question and answer below, >> >> >>- How many nodes do you have on the ring ? >>12 >>

Re: Upgrade from 2.0.9 to 2.1.3

2015-03-07 Thread Fredrik Larsson Stigbäck
Thanks for the advice. /Fredrik > 7 mar 2015 kl. 02:25 skrev graham sanderson : > > Note for anyone who accidentally or otherwise ends up with 2.1.3 in a > situation they cannot downgrade, feel free to look at > > https://github.com/vast-engineering/cassandra/tree/vast-cassandra-2.1.3 >

Re: best practices for time-series data with massive amounts of records

2015-03-07 Thread Eric Stevens
It's probably quite rare for extremely large time series data to be querying the whole set of data. Instead there's almost always a "Between X and Y dates" aspect to nearly every real time query you might have against a table like this (with the exception of "most recent N events"). Because of th

Re: Does DateTieredCompactionStrategy work with a compound clustering key?

2015-03-07 Thread mck
> I believe, that the DateTieredCompactionStrategy would work for PRIMARY > KEY (timeblock, timestamp) -- but does it also work for PRIMARY KEY > (timeblock, timestamp, hash) ? Yes. (sure you don't want to be using a timeuuid instead?) ~mck