Re: indexing question related to playOrm on github

> 1. Can playOrm be listed on cassandra's list of ORMs? It supports a JQL/HQL > query on a trillion rows in under 100ms (partitioning is the trick so you can > JQL a partition) No sure if we have an ORM specific page. If it's a client then feel free to add it to http://wiki.apache.org/cassandr

indexing question related to playOrm on github

1. Can playOrm be listed on cassandra's list of ORMs? It supports a JQL/HQL query on a trillion rows in under 100ms (partitioning is the trick so you can JQL a partition) 2. Many applications have a common indexing problem and I was wondering if cassandra has or could have any support for t

Re: Composite Column Slice query, wildcard first component?

> Is there a way to create a slice query that returns all columns where the > _second_ component is A? No. You can only get a contiguous slice of columns. Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 16/08/2012, at 7:21 AM, Mike Hugo

Re: Migrating to a new cluster (using SSTableLoader or other approaches)

> WARN 09:02:38,534 Unable to instantiate cache provider > org.apache.cassandra.cache.SerializingCacheProvider; using default > org.apache.cassandra.cache.ConcurrentLinkedHashCacheProvider@5d59054d instead Happens when JNA is not in the path. Nothing to worry about when using the sstableloader.

Re: CQL3: Do boolean values need quoting in inserts?

Quoting false is correct from my reading of the Antlr grammar. Constant terms are either strings, UUID, int or long. I'm sure someone from DS will pickup the comment you made on the post and fix the example. Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.

Re: GCInspector info messages in cassandra log

> Is there anything to do before that? like drain or flush? For a clean shutdown I do nodetool -h localhost disablethrift nodetool -h localhost disablegossip && sleep 10 nodetool -h localhost drain then kill > Would you recommend that? If I do it, how often should I do a full snapshot, > and h

Re: Partial composite result limit possible?

You cannot do that in a single query. The order of columns in output is the order they are stored in. And the API can only return a contiguous range of columns. In this case I would get the larger slice and then discard columns client side. Or build a second row that has the order of the col

Composite Column Slice query, wildcard first component?

Hello, Given a row like this "key1" => (A:A:C), (A:A:B), (B:A:C), (B:C:D) Is there a way to create a slice query that returns all columns where the _second_ component is A? That is, I would like to get back the following columns by asking for columns where component[0] = * and component[1] = A

Re: replace dead node? " token -1 "

thanks a lot for the info On Wed, Aug 15, 2012 at 10:31 AM, Jim Cistaro wrote: > I have not viewed the code, but it would seem that replace_token does > not "remove token", because that would spread the data and then "unspread" > it when the new node joins. But like I said, I have not read the

Re: replace dead node? " token -1 "

I have not viewed the code, but it would seem that replace_token does not "remove token", because that would spread the data and then "unspread" it when the new node joins. But like I said, I have not read the code. >From our standpoint, we want the tokens to stay the same when possible due to

Re: [gem] does "disconnect!" work properly?

aaron, i understand Ruby client automatically re-connects. thanks,satoshi --- On Mon, 2012/8/13, aaron morton wrote: My rough understanding of the ruby code is that it auto connects if necessary when you make a request. i.e. your get turns into a _multiget call here https://github.com/twitter/

Migrating to a new cluster (using SSTableLoader or other approaches)

Hi, we are trying to use SSTableLoader to bootstrap a new 7-node cassandra (v. 1.0.10) cluster with the snapshots taken from a 3-node cassandra cluster. The new cluster is in a different data centre. After reading the articles at [1] http://www.datastax.com/dev/blog/bulk-loading [2] http://

CQL3: Do boolean values need quoting in inserts?

Hi, I was following the examples on this page: http://www.datastax.com/dev/blog/whats-new-in-cql-3-0#comment-116250 In the example, a table was created as follows: CREATE TABLE altercations ( instigator text, started_at timestamp, ships_destroyed int, energy_used flo

Re: replace dead node? " token -1 "

considering there is this minor "old node hanging around" issue, would the old T-1 approach sound more attractive? that way you don't necessarily have to remove the dead token immediately, but could come back the next day, or even a week later. T-1 would behave essentially the same in terms of par

Re: replace dead node? " token -1 "

ok, I see, the cassandra.replace_token setting essentially executes the manual removeToken step. so the dead node should be removed. is this the "old node hanging around" issue that you described? https://issues.apache.org/jira/browse/CASSANDRA-3259 looks this JIRA is fixed in 1.0x already, so