I came across this the other day as well. The following FAQ will get you going:
http://wiki.apache.org/cassandra/FAQ#no_keyspaces
-Nate
On Tue, May 18, 2010 at 9:24 AM, Frank Du wrote:
> Hey All,
>
> I tried to run from cassandra trunk source. The keyspace schema has changed
> to cassandra.yaml.
Oh, thanks to Andrey Panov for providing that example, btw. We are
always looking for good usage examples to post on the Hector wiki If
anyone else has them.
-Nate
On Wed, May 12, 2010 at 5:01 PM, Nathan McCall wrote:
> Here is a basic example using get_range_slices to retrieve 500 rows
Here is a basic example using get_range_slices to retrieve 500 rows via hector:
http://github.com/bosyak/hector/blob/master/src/main/java/me/prettyprint/cassandra/examples/ExampleReadAllKeys.java
To page, use the last key you got back as the start key.
-Nate
On Wed, May 12, 2010 at 3:37 PM, Core
David,
Are you using batchMutate or insert? Jump on over to hector-users if
you want API help with either of these.
-Nate
This was on hector-users this morning as well. It has been addressed
and is now in trunk.
-Nate
On Thu, May 6, 2010 at 2:35 PM, Jonathan Ellis wrote:
> That's kind of an odd API wart for Hector. You should file an issue
> on http://github.com/rantav/hector
>
> On Thu, May 6, 2010 at 11:36 AM, J
Ran,
You may want to upgrade your jvm. I had a similar core with a heavily
loaded tomcat recently and found the following on the release notes
page for 1.6.0_18:
"Card-Marking Optimization Issue
A flaw in the implementation of a card-marking performance
optimization in the JVM can cause heap corru
You could try mmap_index_only - this would restrict mmap usage to the
index files.
-Nate
On Tue, May 4, 2010 at 11:57 AM, Ran Tavory wrote:
> I canceled mmap and indeed memory usage is sane again. So far performance
> hasn't been great, but I'll wait and see.
> I'm also interested in a way to ca
-XX:CMSInitiatingOccupancyFraction=75
It's at 90 by default on most systems. Turning this down to the above
would trigger the incremental collection to occur 75% full as opposed
to %90.
-Nate
On Wed, Apr 28, 2010 at 7:44 AM, Jonathan Ellis wrote:
> Yes, incremental mode is definitely contraind
Have you confirmed that your clocks are all synced in the cluster?
This may be the result of an unintentional read-repair occurring if
that were the case.
-Nate
On Tue, Apr 27, 2010 at 2:20 PM, Joost Ouwerkerk wrote:
> Hmm... Even after deleting with cl.ALL, I'm getting data back for some
> rows
Dop,
Thank you for trying out hector. I think you have the right approach
for using it with your project. Feel free to ping us directly
regarding Hector on either of these mailings lists as appropriate:
http://wiki.github.com/rantav/hector/mailing-lists
Cheers,
-Nate
On Tue, Apr 20, 2010 at 7:11
Not yet. If you wanted to provide a patch that would be much
appreciated. A fork and pull request would be best logistically, but
whatever works.
-Nate
On Mon, Apr 19, 2010 at 5:10 PM, Chris Dean wrote:
> Is there a version of hector that has an interface to get_range_slices ?
> or should I prov
In regards to hector, please check all the available branches on
github. We have supported 0.6 for a little while now.
http://github.com/rantav/hector/tree/0.6.0
The master is still based on 0.5, but that is changing in the next
couple of days to match the 0.6 release.
-Nate
On Thu, Apr 15,
FWIW, We just exposed this as an option in hector.
-Nate
On Thu, Apr 15, 2010 at 8:38 AM, Miguel Verde wrote:
> On Thu, Apr 15, 2010 at 10:22 AM, Eric Evans wrote:
>>
>> But, if you've enabled framing on the server, you will not
>> be able to use C# clients (last I checked, there was no framed
I noticed you turned Key caching off in your ColumnFamily declaration,
have you tried experimenting with this on and playing key caching
configuration? Also, have you looked at the JMX output for what
commands are pending execution? That is always helpful to me in
hunting down bottlenecks.
-Nate
Take a look at EmbeddedServerHelper in the hector client for an
example of how this is managed through a test case:
http://github.com/rantav/hector/blob/master/src/test/java/me/prettyprint/cassandra/testutils/EmbeddedServerHelper.java
-Nate
On Wed, Mar 24, 2010 at 5:10 AM, Philip Jackson wrote:
Gary,
Did you see this larticle linked from the Cassandra wiki?
http://about.digg.com/node/564
See http://wiki.apache.org/cassandra/ArticlesAndPresentations for more
examples like the above. In general, you structure your data according
to how it will be queried. This can lead to duplication, but
The cache is a "second-chance FIFO" from this library:
http://code.google.com/p/concurrentlinkedhashmap/source/browse/trunk/src/java/com/reardencommerce/kernel/collections/shared/evictable/ConcurrentLinkedHashMap.java
That sounds like an awful lot of churn given the size of the queue and
the numbe
17 matches
Mail list logo
