Re: Creating counter columns in cassandra

2012-08-01 Thread Pushpalanka Jayawardhana
0100910dx1fwm8z9ek1cvec10jvmpzfa4 >> >> From that message you also get an hint on how to proceed in this >> situation: >> 1) Add a "fake" equality condition to the query; >> 2) Go for a range scan, which is more efficient than the hack above. >> >> Depending on the speed than you need on the writing side compared to >> the speed required on the reading side, you might also consider >> keeping an ad-hoc index of the counter columns with the counter >> greater than your threshold, but it's surely requiring more >> housekeeping on your side. >> >> Paolo >> > > > > -- > Amila Iroshani Paranawithana > CSE-University of Moratuwa. > B-http://amilaparanawithana.blogspot.com > T-https://twitter.com/#!/AmilaPara > > > -- Pushpalanka Jayawardhana

How to Optimizing Cassandra Updates -( Use of memtables)

2012-07-24 Thread Pushpalanka Jayawardhana
ables? -- Pushpalanka Jayawardhana

Re: bulk load problem

2012-07-09 Thread Pushpalanka Jayawardhana
to sstableloader. > > But I am getting the following error: > > Could not retrieve endpoint ranges: > > Any hint ? > > Thanks in advance, > > James > > > > > -- Pushpalanka Jayawardhana | Undergraduate | Computer Science and Engineering University of Moratuwa +94779716248 | http://pushpalankajaya.blogspot.com Twitter: http://twitter.com/Pushpalanka | Slideshare: http://www.slideshare.net/Pushpalanka

Re: bulk load problem

2012-07-09 Thread Pushpalanka Jayawardhana
estination node. > I have put > > tpch-cf0-hd-1-Data.db > tpch-cf0-hd-1-Index.db > > under the path, I have passed to sstableloader. > > But I am getting the following error: > > Could not retrieve endpoint ranges: > > Any hint ? > > Thanks in advance, >

Re: Finding whether a new node is successfully added or not

2012-06-04 Thread Pushpalanka Jayawardhana
, given Internet > accessibility, the Company cannot accept liability for any virus introduced > by this e-mail or any attachment and you are advised to use up-to-date > virus checking software. > -- Pushpalanka Jayawardhana | Undergraduate | Computer Science and Engineering University

Re: Getting error on adding seed to add a new node

2012-06-04 Thread Pushpalanka Jayawardhana
gt; Mu Sigma takes all reasonable steps to ensure that its electronic > communications are free from viruses. However, given Internet > accessibility, the Company cannot accept liability for any virus introduced > by this e-mail or any attachment and you are advised to use up-to-date >

Re: Can not find auto bootstrap property in cassandra.yaml for Cassandra 1.1.0

2012-06-03 Thread Pushpalanka Jayawardhana
for any virus introduced > by this e-mail or any attachment and you are advised to use up-to-date > virus checking software. > -- Pushpalanka Jayawardhana | Undergraduate | Computer Science and Engineering University of Moratuwa +94779716248 | http://pushpalankajaya.blogspot.com Twitter: http://twitter.com/Pushpalanka | Slideshare: http://www.slideshare.net/Pushpalanka