Re: Any tools like phpMyAdmin to see data stored in Cassandra ?

2012-01-30 Thread R. Verlangen
You might run it from a VM? 2012/1/30 Ertio Lew ertio...@gmail.com On Mon, Jan 30, 2012 at 7:16 AM, Frisch, Michael michael.fri...@nuance.com wrote: OpsCenter? http://www.datastax.com/products/opscenter - Mike I have tried Sebastien's phpmyAdmin For

Re: two dimensional slicing

2012-01-30 Thread Bryce Allen
On Sun, 29 Jan 2012 23:26:52 +1300 aaron morton aa...@thelastpickle.com wrote: and compare them, but at this point I need to focus on one to get things working, so I'm trying to make a best initial guess. I would go for RP then, BOP may look like less work to start with but it *will* bite

recovering from network partition

2012-01-30 Thread Thorsten von Eicken
I'm trying to work through various failure modes to figure out the proper operating procedure and proper client coding practices. I'm a little unclear about what happens when a network partition gets repaired. Take the following scenario: - cluster with 5 nodes: A thru E; RF = 3; read_cf = 1;

Re: two dimensional slicing

2012-01-30 Thread aaron morton
(not trolling) but do you have any ideas on how ? The token produced by the partitioner is used as the key in the distributed hash table so we can map keys to nodes, and evenly distribute load. If the range of tokens for the DHT are infinite it's difficult to evenly map them to a finite set

Re: recovering from network partition

2012-01-30 Thread aaron morton
If you are working at CF ONE you are accepting that *any* value for a key+col combination stored on a replica for a row is a valid response, and that includes no value. After the nodes have detected the others are UP they will start their HH in a staggered fashion, and will rate limit

Re: How much has Cassandra improved from 0.8.6 to 1.0+?

2012-01-30 Thread Jake Luciani
Well as they say Lies, damned lies, and statistics This is a alternate comparison you can review: http://www.cubrid.org/blog/dev-platform/nosql-benchmarking/ YCSB is a known and agreed upon benchmark. The benchmark you link includes no sourcecode to reproduce with and as the author mentions For

Re: two dimensional slicing

2012-01-30 Thread Bryce Allen
On Mon, 30 Jan 2012 11:14:37 -0600 Bryce Allen bal...@ci.uchicago.edu wrote: With RP, the idea is to query many versions in ListVersionIndex starting at the desired version going backward, hoping that it will hit a compact version. We could also maintain a separate CompactVersion index, and

Re: how stable is 1.0 these days?

2012-01-30 Thread Jim Newsham
Could you also elaborate for creating/dropping column families? We're currently working on moving to 1.0 and using dynamically created tables, so I'm very interested in what issues we might encounter. So far the only thing I've encountered (with 1.0.7 + hector 1.0-2) is that dropping a cf

Re: SSTable compaction issue in our system

2012-01-30 Thread Roshan Pradeep
Thanks Aaron for the perfect explanation. Decided to go with automatic compaction. Thanks again. On Wed, Jan 25, 2012 at 11:19 AM, aaron morton aa...@thelastpickle.comwrote: The issue with major / manual compaction is that it creates a one file. One big old file. That one file will not be

WARN [Memtable] live ratio

2012-01-30 Thread Roshan
Hi All Time to time I am seen this below warning in Cassandra logs. WARN [Memtable] setting live ratio to minimum of 1.0 instead of 0.21084217381985554 Not sure what the exact cause for this and the solution to eliminate this. Any help is appreciated. Thanks. -- View this message in context:

Re: WARN [Memtable] live ratio

2012-01-30 Thread Mohit Anchlia
I have the same experience. Wondering what's causing this? One thing I noticed is that this happens if server is idle for some time and then load starts going high is when I start to see these messages. On Mon, Jan 30, 2012 at 4:54 PM, Roshan codeva...@gmail.com wrote: Hi All Time to time I am

Re: WARN [Memtable] live ratio

2012-01-30 Thread Roshan
Exactly, I am also getting this when server moving idle to high load. May be Cassandra Experts can help to us. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/WARN-Memtable-live-ratio-tp7238582p7238603.html Sent from the

Re: Any tools like phpMyAdmin to see data stored in Cassandra ?

2012-01-30 Thread fid
I think his development environment is windows. On Mon, Jan 30, 2012 at 7:29 PM, R. Verlangen ro...@us2.nl wrote: You might run it from a VM? 2012/1/30 Ertio Lew ertio...@gmail.com On Mon, Jan 30, 2012 at 7:16 AM, Frisch, Michael michael.fri...@nuance.com wrote: OpsCenter?

Re: how stable is 1.0 these days?

2012-01-30 Thread Ben Coverston
I'm not sure what Carlo is referring to, but generally if you have done, thousands of migrations you can end up in a situation where the migrations take a long time to replay, and there are some race conditions that can be problematic in the case where there are thousands of migrations that may

Re: Any tools like phpMyAdmin to see data stored in Cassandra ?

2012-01-30 Thread Brandon Williams
On Sun, Jan 29, 2012 at 11:52 PM, Ertio Lew ertio...@gmail.com wrote: On Mon, Jan 30, 2012 at 7:16 AM, Frisch, Michael michael.fri...@nuance.com wrote: OpsCenter? http://www.datastax.com/products/opscenter Thanks, that's a great product but unfortunately doesn't work with windows. Now