Re: snapshot files locked

2012-03-14 Thread Jim Newsham
Sure: https://issues.apache.org/jira/browse/CASSANDRA-4050. Thanks, Jim On 3/14/2012 10:17 AM, Tyler Hobbs wrote: Can you open a ticket on https://issues.apache.org/jira/browse/CASSANDRA for this? On Wed, Mar 14, 2012 at 3:04 PM, Jim Newsham <mailto:jnews...@referentia.com>&

Re: snapshot files locked

2012-03-14 Thread Jim Newsham
: snapshot files are "hardlink"s of the original sstables. As you know, on windows, you can't delete files opened by other process. If you try to delete the "hardlink", windows thinks you try to delete the sstables in production. maki 2012/3/14 Jim Newsham: Hi, I&#x

snapshot files locked

2012-03-13 Thread Jim Newsham
Hi, I'm using Cassandra 1.0.8, on Windows 7. When I take a snapshot of the database, I find that I am unable to delete the snapshot directory (i.e., dir named "{datadir}\{keyspacename}\snapshots\{snapshottag}") while Cassandra is running: "The action can't be completed because the folder o

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 m

Re: rename column family

2012-01-03 Thread Jim Newsham
les and use the new CF name. 3) Drop the old CF using the CLI or CQL 4) The Drop CF command will create a snapshot, you may want to delete this. Hope that helps. - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 31/12/2011, at 8:42 AM, Jim Newsham wr

rename column family

2011-12-30 Thread Jim Newsham
How can I rename a column family (if version matters, I'm interested in both 0.8.x and 1.0.x). Thanks, Jim

Re: Second Cassandra users survey

2011-11-04 Thread Jim Newsham
On 11/4/2011 4:32 PM, Brandon Williams wrote: On Fri, Nov 4, 2011 at 9:19 PM, Jim Newsham wrote: - Bulk column deletion by (column name) range. Without this feature, we are forced to perform a range query and iterate over all of the columns, deleting them one by one (we do this in a batch

Re: Second Cassandra users survey

2011-11-04 Thread Jim Newsham
- Bulk column deletion by (column name) range. Without this feature, we are forced to perform a range query and iterate over all of the columns, deleting them one by one (we do this in a batch, but it's still a very slow approach). See CASSANDRA-494/3448. If anyone else has a need for this

Re: Concurrency: Does C* support a Happened-Before relation between processes' writes?

2011-06-24 Thread Jim Newsham
On 6/24/2011 9:28 AM, Yang wrote: without a clear description of your pseudo-code, it's difficult to say whether it will work. but I think it can work fine as an election/agreement protocol, which you can use as a lock to some degree, but this requires all the potential lock contenders to all

Re: Cassandra ACID

2011-06-24 Thread Jim Newsham
On 6/23/2011 8:55 PM, AJ wrote: Can any Cassandra contributors/guru's confirm my understanding of Cassandra's degree of support for the ACID properties? I provide official references when known. Please let me know if I missed some good official documentation. *Atomicity* All individual writ