Re: minimum number of machines for RF=3

2011-07-07 Thread david lee
ree, compare the hash values, then transfer latest data to > each other. > > You can tune the HH, read repair to reduce performance impact on self > healing activities. > > maki > > On 2011/07/07, at 18:10, david lee wrote: > > > hi guys, > > > > is

minimum number of machines for RF=3

2011-07-07 Thread david lee
hi guys, is there a minimum(recommended) number of machines for RF=3? i encountered a test result where # of nodes = 3 RF = 3 CL.READ=QUORUM and when 1 node was taken out and back in after which node repair was run, the TPS dropped significantly. is this behaviour expected since the RF (for th

Re: "range query" vs "slice range query"

2011-05-25 Thread david lee
; > > Robert Jackson > > -- > *From: *"Jonathan Ellis" > *To: *user@cassandra.apache.org > *Sent: *Wednesday, May 25, 2011 8:54:34 AM > *Subject: *Re: "range query" vs "slice range query" > > get_range_slic

"range query" vs "slice range query"

2011-05-25 Thread david lee
hi guys, i'm reading up on the book "Cassandra - Definitive guide" and i don't seem to understand what it says about "ranges and slices" my understanding is a range as in "a mathematical range to define a subset from an ordered set of elements", in cassandra typically means a range of rows wherea

Re: log4j settings inquiry

2011-03-24 Thread david lee
> it cannot resolve a path to load the config from. > > You can hard code the log config path by modifying the line > -Dlog4j.configuration=log4j-server.properties^ > > in cassandra.bat and specifying a path using the file:// protocol > > Hope that helps. > Aaron &g

log4j settings inquiry

2011-03-23 Thread david lee
hi, i'm trying to run cassandra 0.7 on my windows machine, and i don't seem to be able to go beyond the warning message C:\Program Files\Apache Software Foundation\apache-cassandra-0.7.4\bin>cassandra -f Starting Cassandra Server log4j:WARN No appenders could be found for logger (org.apache.cassa