Hi,
Two things about get_count API:
1)
In the http://wiki.apache.org/cassandra/API, there is only one get_count
method there:
i32 get_count(string keyspace, string key, ColumnParent column_parent,
ConsistencyLevel consistency_level)
But as per the Thrift Client API, it looks like t
Hector will released one along with 0.7, or there are any beta or alpha before
official release of 0.7?
I’m planning to update my client to work with Cassandra 0.7 trunk now, and I
have a dependency on your library. J
Dop
From: Ran Tavory [mailto:ran...@gmail.com]
Sent: Wednesday, Ju
seems to be
the wrong way.
If you have something that works that will put me on the right track I hope.
Gavan
On Mon, Jul 12, 2010 at 2:41 AM, Dop Sun wrote:
Based on current source codes in the head, moving from 0.6.x to 0.7, means
some code changes in the client side (other than
Based on current source codes in the head, moving from 0.6.x to 0.7, means
some code changes in the client side (other than server side changes, like
storage_conf.xml).
Something like:
1. New Clock class instead of timestamp: this may be trivia, but it
takes some time to change
2.
Cool. Thanks.
-Original Message-
From: Eric Evans [mailto:eev...@rackspace.com]
Sent: Sunday, July 04, 2010 12:07 AM
To: user@cassandra.apache.org
Subject: Re: Guava vs. Google-collections
On Sat, 2010-07-03 at 23:05 +0800, Dop Sun wrote:
> Cassandra has dependencies on Goo
Hi,
Cassandra has dependencies on Google-collections, and as stated in the
Google-collections official site, it has been deprecated, and replaced by
its super set Guava.
Is there any plan to replace the dependencies from Google-collections to
guava?
Here are some lines from Google-colle
>From your log, you are using Eclipse/ Equinox, and it's because one of the
.so file cannot be found in the path specified by java.library.path, Maybe
check the settings. Looks it's not related with the Cassandra or Hector.
Try to find out whether the java.library.path has been set properly?
Aha, I believe it's explained here:
http://spyced.blogspot.com/2010/02/distributed-deletes-in-cassandra.html
Thanks,
Regards,
Dop
From: Dop Sun [mailto:su...@dopsun.com]
Sent: Sunday, June 27, 2010 6:56 AM
To: user@cassandra.apache.org
Subject: About Remove API
Hi,
Hi,
I was reminded that there is a Remove API, which can delete the whole rows
by specifying the timestamp, key, and column family (in this case,
super_column or column are optional).
But I found, even I delete all rows for the specified keys with this method,
the get_range_slices API will
, 2010 at 6:05 PM, Dop Sun wrote:
And also, you are only select 1 key and 10 columns?
criteria.keyList(Lists.newArrayList(userName)).columnRange(nameFirst,
nameFirst, 10);
Then, if you have 200k keys, you have 200k Thrift calls. If this is the
case, you may need to optimize the way you do
Good to have new API wrappers.
I guess different APIs because people look Cassandra from different angle
with different backgrounds/ skills. At this stage, it's better that
different API find the good ideas from each other, and maybe one day, there
is one, which widely accepted. That's good for al
keys into a single query), and to reduce the number of calls.
From: Dop Sun [mailto:su...@dopsun.com]
Sent: Saturday, June 12, 2010 8:57 AM
To: user@cassandra.apache.org
Subject: RE: read operation is slow
You mean after you "I remove some unnecessary column family and change the
si
: Saturday, June 12, 2010 8:48 AM
To: user@cassandra.apache.org
Subject: Re: read operation is slow
Hi, do you mean this one should not introduce much extra delay? To read a
record, I need select here, not sure where the extra delay comes from.
On Fri, Jun 11, 2010 at 5:29 PM, Dop Sun wrote:
Ja
Jassandra is used here:
Map> map = criteria.select();
The select here basically is a call to Thrift API: get_range_slices
From: Caribbean410 [mailto:caribbean...@gmail.com]
Sent: Saturday, June 12, 2010 8:00 AM
To: user@cassandra.apache.org
Subject: Re: read operation is slow
I
asily turn into a "dump the entire datastore" if you aren't careful.
On Jun 10, 2010, at 10:03 AM, Dop Sun wrote:
Hi,
As documented in the http://wiki.apache.org/cassandra/API, the key range for
get_range_slices are both inclusive.
As discussed in this thread:
http
Hi,
As documented in the http://wiki.apache.org/cassandra/API, the key range for
get_range_slices are both inclusive.
As discussed in this thread:
http://groups.google.com/group/jassandra-user/browse_thread/thread/c2e56453c
de067d3, there is a case that user want to discover all keys (huge
really meant was, moving or copying the ROWS defined by a KeyRange in
between ColumnFamilies.
Do you think it's doable with an efficient way?
On Wed, May 26, 2010 at 3:14 PM, Dop Sun wrote:
There are no single API call to achieve this.
It’s read and write, plus a delete (if move) API ca
There are no single API call to achieve this.
It’s read and write, plus a delete (if move) API calls I guess.
From: Utku Can Topçu [mailto:u...@topcu.gen.tr]
Sent: Wednesday, May 26, 2010 9:09 PM
To: user@cassandra.apache.org
Subject: Moving/copying columns in between ColumnFamilies
He
edit)
On Tue, May 25, 2010 at 2:12 AM, Dop Sun wrote:
> A good chance to introduce my http://code.google.com/p/jassandra/
>
>
>
> J
>
>
>
> Another Java client, and well, it cannot be found with Cassandra java
client
> keywords. K
>
>
>
> From: Ran Tavory
A good chance to introduce my http://code.google.com/p/jassandra/
J
Another Java client, and well, it cannot be found with Cassandra java client
keywords. K
From: Ran Tavory [mailto:ran...@gmail.com]
Sent: Tuesday, May 25, 2010 2:52 PM
To: user@cassandra.apache.org
Subject: Re: Hector
Then what kink of column name should I use?
2010/5/23 Dop Sun
CompareWith defines type for column name/ super column name, and at the
moment, key should be always String.
From: huajun qi [mailto:qih...@gmail.com]
Sent: Saturday, May 22, 2010 10:19 PM
To: user@cassandra.apache.org
Subject
CompareWith defines type for column name/ super column name, and at the
moment, key should be always String.
From: huajun qi [mailto:qih...@gmail.com]
Sent: Saturday, May 22, 2010 10:19 PM
To: user@cassandra.apache.org
Subject: long type
I set the "CompareWith" property to "longtype", but
utate.
If Cassandra CPU is your bottleneck then using the binary load method
from StorageProxy can help (see contrib/bmt_example).
If Casssandra disk or network is your bottleneck then binary load
won't really help.
On Thu, May 6, 2010 at 7:51 AM, Dop Sun wrote:
> Hi,
>
>
>
&
Hi,
I just discovered that the json file exported by sstable2json contains more
than the data itself, like deletedAt values.
I'm thinking whether there is a tool can import some initial data?
When we are doing the typical RDBMS system, this is how we are doing:
1) Define the sche
n bat script on windows
can you create a ticket at
https://issues.apache.org/jira/browse/CASSANDRA and attach your .bat
files?
On Wed, May 5, 2010 at 8:32 AM, Dop Sun wrote:
> Thanks for your reply.
>
> Since I need to import several hundred lines of data into my laptop
instance
> (singe
files yet.
On Tue, May 4, 2010 at 6:29 PM, Dop Sun wrote:
> Hi,
>
>
>
> As of 0.6.1, I don't find sstable2jason.bat. I don't know if I missed
> anything?
>
>
>
> It will good if we can have one, which can help import/ export data in/
out
> deve
Hi,
As of 0.6.1, I don't find sstable2jason.bat. I don't know if I missed
anything?
It will good if we can have one, which can help import/ export data in/ out
development machine.
Thanks,
Regards,
Dop
?
Regards,
Michael
On Wed, Apr 28, 2010 at 7:37 AM, Dop Sun wrote:
Hi,
Yesterday, I saw a lot of discussion about how to store a file (big one). It
looks like the suggestion is store in multiple rows (even not multiple column
in a single row).
My question is:
Is there any best maximum c
Hi,
Here are some links I collected:
1. http://wiki.apache.org/cassandra/CassandraCli: this is how bring it up
and run
2. http://arin.me/blog/wtf-is-a-supercolumn-cassandra-data-model is very
good to start to understand the schema
3. http://codeqm.blogspot.com/2010/03/jav
Hi,
Yesterday, I saw a lot of discussion about how to store a file (big one). It
looks like the suggestion is store in multiple rows (even not multiple
column in a single row).
My question is:
Is there any best maximum column size which can help to make the decision on
the segment size? Is
http://code.google.com/p/jassandra/source/browse/trunk/org.softao.jassandra/
src/org/softao/jassandra/thrift/ThriftColumnFamily.java
Insert and Delete method of this class are using batch_mutation.
Cheers.
Dop
From: Lubos Pusty [mailto:lubospu...@gmail.com]
Sent: Friday, April 23, 2010 9
like other ppl have done
with ORM layers on top of it.
Hector's main features include extensive jmx counters, failover and connection
pooling.
It's available for all recent versions, including 0.5.0, 0.5.1, 0.6.0 and 0.6.1
On Mon, Apr 19, 2010 at 5:58 PM, Dop Sun wrote:
Well, there
ppl have done
with ORM layers on top of it.
Hector's main features include extensive jmx counters, failover and connection
pooling.
It's available for all recent versions, including 0.5.0, 0.5.1, 0.6.0 and 0.6.1
On Mon, Apr 19, 2010 at 5:58 PM, Dop Sun wrote:
Well, there are couple
rget to close the connection.
connection.close();
}
}
-Original Message-
From: Jonathan Ellis [mailto:jbel...@gmail.com]
Sent: Monday, April 19, 2010 10:35 PM
To: user@cassandra.apache.org
Subject: Re: Cassandra Java Client
How is Jassandra different from http://github.com/ranta
May I take this chance to share this link here:
http://code.google.com/p/jassandra/
It currently based with Cassandra 0.6 Thrift APIs.
The class ThriftCriteria and ThriftColumnFamily has direct use of Thrift
API. Also, the site itself has test code, which is actually works on
Jassandra abs
and
finish is for the standard columns
Thanks for all your help. Appreciated!
Dop
-Original Message-----
From: Dop Sun [mailto:su...@dopsun.com]
Sent: Monday, April 12, 2010 9:44 PM
To: user@cassandra.apache.org
Subject: RE: FW: Is there any way to enable the multiple super column names
uper1.
Regards,
Dop
-Original Message-
From: Dop Sun [mailto:su...@dopsun.com]
Sent: Monday, April 12, 2010 9:03 PM
To: user@cassandra.apache.org
Subject: RE: FW: Is there any way to enable the multiple super column names
at a time?
Thanks for your quick reply.
Actually, I tried to lea
mn parameter to ColumnParent is optional precisely so you
can do this. http://wiki.apache.org/cassandra/API
On Mon, Apr 12, 2010 at 6:37 AM, Dop Sun wrote:
> I guess I'm putting in the wrong email list. Sorry for this.
>
> My question in short is: whether I can get a certain range of sup
_parent as parameter, means a single CF + SC
multiget_slice: contains column_parent as parameter, means a single CF + SC
get_range_slices: contains column_parent as parameter, means a single CF +
SC
Regards,
Dop
-Original Message-----
From: Dop Sun [mailto:su...@dopsun.com]
Sent: Monday, April 12, 20
I don't know whether I'm wrong or not (I'm also new to Cassandra). But looks
like we only can query a single Super Column at a single query since these
values are specified in the ColumnParent parameter. Which means that you
only can query a single week or month (as your super column).
From: Ph
...@gmail.com]
Sent: Sunday, April 11, 2010 9:12 PM
To: user@cassandra.apache.org
Subject: Re: How to perform queries on Cassandra?
How to handle same usernames. Otherwise seems fine to me.
On Sun, Apr 11, 2010 at 6:17 PM, Dop Sun wrote:
Hi,
As far as I can see it, the Cassandra API currently
Hi,
As far as I can see it, the Cassandra API currently supports criterias on:
Token – Key – Super Column Name (if applicable) - Column Names
I guess Token is not usually used for the day to day queries, so, Key and
Column Names are normally used for querying. For the user name and passwo
whoss can be lost (some non critical logs?), then a dedicated keyspace
with a smaller replication factor can be a good thing.
Kind regards,
Benoit.
2010/4/10 Dop Sun :
> Hi, a question troubles me now: how many KeySpaces one application is better
> to use?
>
>
>
> The question i
things.
On Fri, Apr 9, 2010 at 11:17 PM, Dop Sun wrote:
> Hi, a question troubles me now: how many KeySpaces one application is
better
> to use?
>
>
>
> The question is coming out since 0.6, Cassandra introduced a new API named
> as login, which is done against a specific ke
Hi, a question troubles me now: how many KeySpaces one application is better
to use?
The question is coming out since 0.6, Cassandra introduced a new API named
as "login", which is done against a specific keySpace. Thanks to the
org.apache.cassandra.auth.AllowAllAuthenticator, the old version c
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