Thanks. I'll check that out.
Les
From: Robert Coli [mailto:rc...@eventbrite.com]
Sent: Wednesday, September 04, 2013 10:14 AM
To: user@cassandra.apache.org
Subject: Re: Newbie: Question on JSON values
On Wed, Sep 4, 2013 at 10:12 AM, Hartzman, Leslie
mailto:leslie.d.hartz...@medtroni
Hello,
I'm just getting my feet wet with Cassandra and I wanted to know if it is
possible to search a JSON value in a column and not just retrieve the whole
JSON value?
Thanks.
Les
[CONFIDENTIALITY AND PRIVACY NOTICE]
Information transmitted by this email is proprietary to Medtronic and is
On Wed, Sep 4, 2013 at 10:12 AM, Hartzman, Leslie <
leslie.d.hartz...@medtronic.com> wrote:
> I’m just getting my feet wet with Cassandra and I wanted to know if it
> is possible to search a JSON value in a column and not just retrieve the
> whole JSON value?
>
If you indexed it with Datastax Ed
Sounds like
https://issues.apache.org/jira/browse/CASSANDRA-4219?attachmentOrder=desc
Drop back to 1.0.10 and have a play.
Good luck.
-
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 1/06/2012, at 6:38 AM, Chen, Simon wrote:
> Hi,
> I am new
Hi,
I am new to Cassandra.
I have started a Cassandra instance (Cassandra.bat), played with it for a
while, created a keyspace Zodiac.
When I kill Cassandra instance and restarted, the keyspace is gone but when I
tried to recreate it,
I got 'org.apache.thrift.transport.TTransportException' err
Thanks everybody! Appreciate it.
From: Watanabe Maki [mailto:watanabe.m...@gmail.com]
Sent: Wednesday, April 11, 2012 5:40 PM
To: user@cassandra.apache.org
Subject: Re: Initial token - newbie question (version 1.0.8)
auto_bootstrap parameter has been removed and always enabled since 1.0
al Message-
> From: Jeremiah Jordan [mailto:jeremiah.jor...@morningstar.com]
> Sent: Wednesday, April 11, 2012 3:03 PM
> To: user@cassandra.apache.org
> Subject: RE: Initial token - newbie question (version 1.0.8)
>
> You have to use nodetool move to change the token after the node has started
ere to configure the auto_bootstrap
> parameter in version 1.0.8?
>
> Thanks
> Jay
>
> -Original Message-
> From: Jeremiah Jordan [mailto:jeremiah.jor...@morningstar.com]
> Sent: Wednesday, April 11, 2012 3:03 PM
> To: user@cassandra.apache.org
> Subject:
Subject: RE: Initial token - newbie question (version 1.0.8)
You have to use nodetool move to change the token after the node has started
the first time. The value in the config file is only used on first startup.
Unless you were using RF=3 on your 3 node ring, you can't just start with
't be moving anything anyway, so
you should just do it the right way and use nodetool.
From: Jay Parashar [jparas...@itscape.com]
Sent: Wednesday, April 11, 2012 1:44 PM
To: user@cassandra.apache.org
Subject: Initial token - newbie question (version 1.0.8)
I created a 3 node ring with the intial_token blank. Of course as expected,
Cassandra generated its own tokens on startup (e.g. tokens X, Y and Z)
The nodes or course were not properly balanced, so I did the following steps
1) stopped all the 3 nodes
2) assigned initial_tokens (A,
@Tamar: Thanks a ton! works perfect now!
On Mon, Feb 20, 2012 at 12:02 PM, Tamar Fraenkel wrote:
> On 19/02/2012 21:55, Aditya Gupta wrote:
>
> Is there anything to do with running cassandra on a VMware ubuntu instance
> !? I am trying Cassandra on VMware ubuntu server instance.
>
> I am doing t
On 19/02/2012 21:55, Aditya Gupta wrote:
Is there anything to do with running cassandra on a VMware ubuntu
instance !? I am trying Cassandra on VMware ubuntu server instance.
I am doing that for the past couple of weeks both on VMWare player and
on ESXi in development and it works fine.
My Ubun
Is there anything to do with running cassandra on a VMware ubuntu instance
!? I am trying Cassandra on VMware ubuntu server instance.
On Sun, Feb 19, 2012 at 2:45 AM, Aditya Gupta wrote:
> In my case, after installing cassandra, as soon as the server is started
> it hangs on it own (totally unre
In my case, after installing cassandra, as soon as the server is started it
hangs on it own (totally unresponsive).
It had openJDK-6's jdk & jre implementations.
On Sat, Feb 18, 2012 at 10:30 PM, Guy Incognito wrote:
> perhaps entirely unrelated, but somebody was asking about lockups on EC2
>
perhaps entirely unrelated, but somebody was asking about lockups on EC2
yesterday and found: http://wiki.apache.org/cassandra/FAQ#ubuntu_hangs
On 18/02/2012 14:58, Aditya Gupta wrote:
Am I installing it the right way ? While installing I didn't verify
the signatures using public key.
On Sat,
Am I installing it the right way ? While installing I didn't verify the
signatures using public key.
On Sat, Feb 18, 2012 at 8:21 PM, Aditya Gupta wrote:
> No data at all. just a fresh installation
>
>
> On Sat, Feb 18, 2012 at 6:57 PM, R. Verlangen wrote:
>
>> You might want to check your Cass
No data at all. just a fresh installation
On Sat, Feb 18, 2012 at 6:57 PM, R. Verlangen wrote:
> You might want to check your Cassandra logs, they contain important
> information that might lead you to the actual cause of the problems.
>
> 2012/2/18 Aditya Gupta
>
>> Thanks! But what about the
On 18 February 2012 13:14, Aditya Gupta wrote:
> Thanks! But what about the 100% cpu consumption that is causing the server
> to hang?
Do you have any application talking to that Cassandra, or is it just
freshly installed Cassandra with no data at all?
You might want to check your Cassandra logs, they contain important
information that might lead you to the actual cause of the problems.
2012/2/18 Aditya Gupta
> Thanks! But what about the 100% cpu consumption that is causing the server
> to hang?
>
>
> On Sat, Feb 18, 2012 at 6:19 PM, Watanabe
For clarification, I'm running Cassandra on a VMware ubuntu server instance.
On Sat, Feb 18, 2012 at 6:44 PM, Aditya Gupta wrote:
> Thanks! But what about the 100% cpu consumption that is causing the server
> to hang?
>
>
> On Sat, Feb 18, 2012 at 6:19 PM, Watanabe Maki wrote:
>
>> I haven't use
Thanks! But what about the 100% cpu consumption that is causing the server
to hang?
On Sat, Feb 18, 2012 at 6:19 PM, Watanabe Maki wrote:
> I haven't use the packaged kit, but Cassandra uses half of physical memory
> on your system by default.
> You need to edit cassandra-env.sh to decrease heap
I haven't use the packaged kit, but Cassandra uses half of physical memory on
your system by default.
You need to edit cassandra-env.sh to decrease heap size.
Update MAX_HEAP_SIZE and NEW_HEAP_SIZE and restart.
From iPhone
On 2012/02/18, at 20:40, Aditya Gupta wrote:
> I just installed Cassan
I just installed Cassandra on my ubuntu server by adding the following to
the sources list:
deb http://www.apache.org/dist/cassandra/debian 10x main
deb-src http://www.apache.org/dist/cassandra/debian 10x main
Soon after install I started getting OOM errors & then the server became
unresponsive.
So you can do this with Cassandra, but you need more logic in your code.
Basically, you get the last safe number, M, then get N..M, if there are any
gaps, you try again reading those numbers. As long as you are not over writing
data, and you only update the last safe number after a successful
> But is there any way of implementing minimum required ACID subset on
top of Cassandra?
try this, its nosql ACID compliant. I haven't tested this, it will have
most likely pretty slow writes and lot of bugs like any other oracle
application.
http://www.oracle.com/technetwork/database/nosqld
Hi R. Verlangen!
On 2011.12.27 at 15:50:24 +0100, R. Verlangen wrote next:
> You might consider a hybrid solution with a transactional db for all data
> that should be ACID complient and Cassandra for the huge amounts of data
> you want to store.
>
> 2011/12/27 Radim Kolar
>
> >
> > makes me
You might consider a hybrid solution with a transactional db for all data
that should be ACID complient and Cassandra for the huge amounts of data
you want to store.
2011/12/27 Radim Kolar
>
> makes me feel disappointed about consistency in Cassandra, but I wonder is
>> there is a way to work a
makes me feel disappointed about consistency in Cassandra, but I wonder is
there is a way to work around it.
cassandra is not suitable for this kind of programs. CouchDB is slightly
better, it has transactions but no locking and i am not sure if
transaction isolation is supported now. mongodb
Hello everybody.
I am developer of financial-related application, and I'm currently evaluating
various nosql databases for our current goal: storing various views which show
state of the system in different aspects after each transaction.
The write load seems to be bigger than typical SQL databas
Should the different datatype col values or names be first read as byte
buffer & then converted to appropriate type using Hector's provided
serializers api like the way shown below ?
ByteBuffer bb;
..
String s= StringSerializer.get().fromByteBuffer(bb);
Or are there any better ways ?
is you will need to run 2 queries to get the data.
>
> -Naren
>
> On Tue, May 10, 2011 at 6:33 AM, Sam Ganesan wrote:
> All:
>
> A newbie question to the aficianados. I understand that I can stipulate an
> ordering mechanism when I create a column family to reflect what I am
If I understand correctly, CompositeType comparator
(https://issues.apache.org/jira/browse/CASSANDRA-2231) may be of
interest to you once it becomes available.
2 queries to get the
data.
-Naren
On Tue, May 10, 2011 at 6:33 AM, Sam Ganesan wrote:
> All:
>
> A newbie question to the aficianados. I understand that I can stipulate an
> ordering mechanism when I create a column family to reflect what I am
> querying in the long run. Gene
All:
A newbie question to the aficianados. I understand that I can stipulate an
ordering mechanism when I create a column family to reflect what I am
querying in the long run. Generally I need to query a particular column
space that I am contructing based on two different columns. The
It iterates over all the SSTables and disk and estimates the number of keys by
looking at how big the index is. It does not count the actual keys.
aaron
On 31 Mar 2011, at 17:46, Sheng Chen wrote:
> I just found an estmateKeys() method of the ColumnFamilyStoreMBean.
> Is there any indication
I just found an estmateKeys() method of the ColumnFamilyStoreMBean.
Is there any indication about how it works?
Sheng
2011/3/28 Sheng Chen
> Hi all,
> I want to know how many records I am holding in Cassandra, just like
> count(*) in sql.
> What can I do ? Thank you.
>
> Sheng
>
>
>
ll keys is much faster but less elegant and can be more annoying
> if you want do that from your application.
> >
> > Hope that do the trick for you.
> > -Orr
> >
> > -Original Message-
> > From: Joshua Partogi [mailto:joshua.j...@gmail.com]
> > Se
on.
>
> Hope that do the trick for you.
> -Orr
>
> -Original Message-
> From: Joshua Partogi [mailto:joshua.j...@gmail.com]
> Sent: Monday, March 28, 2011 2:39 PM
> To: user@cassandra.apache.org
> Subject: Re: newbie question: how do I know the total number of rows of a
ok, so not all nosql has column families...
just
s/nosql/cassandra/g
on my previous post ;-)
On 28 March 2011 13:38, Joshua Partogi wrote:
> Not all NoSQL is like that. Or perhaps the term NoSQL has became vague
> these days.
>
> On Mon, Mar 28, 2011 at 6:16 PM, Stephen Connolly
> wrote:
>> i
[mailto:joshua.j...@gmail.com]
Sent: Monday, March 28, 2011 2:39 PM
To: user@cassandra.apache.org
Subject: Re: newbie question: how do I know the total number of rows of a cf?
Not all NoSQL is like that. Or perhaps the term NoSQL has became vague
these days.
On Mon, Mar 28, 2011 at 6:16 PM,
Not all NoSQL is like that. Or perhaps the term NoSQL has became vague
these days.
On Mon, Mar 28, 2011 at 6:16 PM, Stephen Connolly
wrote:
> iterate.
>
> otherwise if that will be too slow and you will do it often, the nosql way
> is to create a separate column family updated with each row add/d
iterate.
otherwise if that will be too slow and you will do it often, the nosql way
is to create a separate column family updated with each row add/delete to
hold the answer for you.
- Stephen
---
Sent from my Android phone, so random spelling mistakes, random nonsense
words and other nonsense a
Hi all,
I want to know how many records I am holding in Cassandra, just like
count(*) in sql.
What can I do ? Thank you.
Sheng
Hi Derek,
The Cassandra sink currently only works with Cassandra 0.7, although I don't
suppose that is what is causing the 'InvalidSink' problem.
What version of Flume are you using? The plugin works with Flume 0.9.1, but
for 0.9.2 they upgraded the Thrift library version that the project uses a
Hi -
I'm not sure if this should be asked on the Cassandra or Flume list, so I'm
trying both -
I am trying to do a proof of concept for logging into Cassandra. We need to
capture large volumes of audit events in a non-lossy manner at the same time
being able to quickly access those events fo
-
> > Sent from BlackBerry
> >
> > -Original Message-
> > From: Jonathan Ellis
> > Date: Sat, 25 Dec 2010 00:05:44
> > To: user
> > Reply-To: user@cassandra.apache.org
> > Subject: Re: Newbie question - fetchin
e app?
>
> Thanks.
> Roshan
> ---
> Sent from BlackBerry
>
> -Original Message-
> From: Jonathan Ellis
> Date: Sat, 25 Dec 2010 00:05:44
> To: user
> Reply-To: user@cassandra.apache.org
> Subject: Re: Newbie que
, 25 Dec 2010 00:05:44
To: user
Reply-To: user@cassandra.apache.org
Subject: Re: Newbie question - fetching multiple columns of different
datatypes and conversion from byte[]
Or you can specify the types with the column name instead of doing a slice.
On Fri, Dec 24, 2010 at 11:23 PM, Nate McCall
Or you can specify the types with the column name instead of doing a slice.
On Fri, Dec 24, 2010 at 11:23 PM, Nate McCall wrote:
> In the case where you have different value types within the same
> slice, yes, you must handle the conversion yourself and
> ByteBufferSerializer is the easiest way t
In the case where you have different value types within the same
slice, yes, you must handle the conversion yourself and
ByteBufferSerializer is the easiest way to do that.
On Fri, Dec 24, 2010 at 10:44 PM, Roshan Dawrani
wrote:
> Hi,
>
> I am new to Cassandra and Hector and have a basic question
Hi,
I am new to Cassandra and Hector and have a basic question on fetching
multiple columns of a row that have mixed data types.
So, I am basically doing equivalent of "Select dateCol1, dateCol2,
stringCol1, intCol1 from a_table where key in (?, ?, ?...)"
My question is do I need to do the conve
I've found the solution, thanks for the help, I needed to change the addresses
on the storage-conf.xml both ListenAddress and ThriftAddress to the address of
the server itself. Sorry about the snippet being incomplete btw
On Dec 6, 2010, at 4:18 PM, Ryan King wrote:
> It would help if you giv
It would help if you give us more context. The code snippet you've
given us is incomplete and not very helpful.
-ryan
On Mon, Dec 6, 2010 at 12:33 PM, Alberto Velandia
wrote:
> Hi I've successfully managed to connect to the server through the
> cassandra-cli command but still no luck on doing it
Hi I've successfully managed to connect to the server through the cassandra-cli
command but still no luck on doing it from Fauna, I'm running cassandra 0.6.8
and I did the usual require 'cassandra'
I've changed the ThriftAddress on the storage-conf.xml to the IP address of the
server itself, do
You can run the cassandra-cli from any machine. If you run it from the same machine as your ruby code it's a reliable way to check you can connect to the cluster. ok, next set of questions- what version of cassandra are you using ? Is it 0.7?- what require did you run ? was it require 'cassandr
I've tried the keyspaces() function and got this on return:
compass.keyspaces()
CassandraThrift::Cassandra::Client::TransportException:
CassandraThrift::Cassandra::Client::TransportException
from
/home/compass/.rvm/gems/ruby-1.9.2...@rails3/gems/thrift-0.2.0.4/lib/thrift/transport/socke
What function are you calling to get data and what is the error ?Try calling a function like keyspaces(), it should return a list of the keyspaces in your cluster and is a good way to test things are connected.If there is still no joy check you can connect to your cluster using the cassandra-cli c
Hi I'm trying to create a connection to a server running cassandra doing this:
compass = Cassandra.new('Compas', servers="223.798.456.123:9160")
But once I try to get some data I realize that there's no connection, any
ideas?? I'm I missing something ?
Thanks
Sorry - just realised this is now a parameter on the CFDef
From: Dr. Andrew Perella [mailto:a...@eutechnyx.com]
Sent: 26 November 2010 14:17
To: user@cassandra.apache.org
Subject: RE: Newbie question on Cassandra mem usage
How can I set these per CF when I create them dynamically?
Regards
How can I set these per CF when I create them dynamically?
Regards,
Andrew
From: Aaron Morton [mailto:aa...@thelastpickle.com]
Sent: 22 November 2010 21:40
To: user@cassandra.apache.org
Subject: Re: Newbie question on Cassandra mem usage
They are memtable_throughput_in_mb
They are memtable_throughput_in_mb, memtable_flush_after_mins, memtable_operations_in_millions. Under 0.7 these are per CF settings, in 0.6 these are cluster wide. To start with try mb one down to something like 64 or 128, ops to 0.5 and mins to 60 . What version are you using ? AaronOn 23 Nov, 20
Hi,
Is it the min_compaction_threshold and max_compaction_threshold? Do i
need to lower the memtable setting also?
Thanks,
Trung.
On Mon, Nov 22, 2010 at 12:02 PM, Jonathan Ellis wrote:
> Set your columnfamily thresholds lower.
>
> On Mon, Nov 22, 2010 at 12:45 PM, Trung Tran wrote:
>> Hi,
>>
Set your columnfamily thresholds lower.
On Mon, Nov 22, 2010 at 12:45 PM, Trung Tran wrote:
> Hi,
>
> I have a test cluster of 3 nodes, 14Gb of mem in each node,
> replication factor = 3. With default -Xms and Xmx, my nodes are set to
> have max-heap-size = 7Gb. After initial load with about 200M
Hi,
Thanks for the guideline. I did not turn up any memory setting, the
nodes are configured with all default settings (except for disk-access
is using nmap). I have 3 nodes with 1 client using hector, 8 writing
threads. There are 3 CF, 1 standard and 2 super.
Thanks,
Trung.
On Mon, Nov 22, 2010
The higher memory usage for the java process may be because of memory mapped file access, take a look at the disk_access_mode in cassandra.yaml WRT going OutOfMemory:- what are your Memtable thresholds in cassandra.yaml ? - how many Column Families do you have? - What are your row and key cache set
Hi,
I have a test cluster of 3 nodes, 14Gb of mem in each node,
replication factor = 3. With default -Xms and Xmx, my nodes are set to
have max-heap-size = 7Gb. After initial load with about 200M rows
(write with hector default consistencylevel = quorum,) my nodes memory
usage are up to 13.5Gb, sh
Thanx Gary.
I was thinking of using range partitioning for breaking the input.
Say, we could have different threads handling diffierent rages - (A-J)
by thread1, (K-P) by thread2. This way, there won't probably be any
chance of collision. But the thread which actually performs the
distribution cou
On Wed, Oct 27, 2010 at 03:24, Arijit Mukherjee wrote:
> Hi All
>
> I've another related question.
>
> I am using a stream of records of the form (A, B, n) where the pair
> (A,B) can occur multiple times. For example, you could have the
> following rset of records -
>
> A, B, 2
> P, Q, 5
> X, Y, 3
Hi All
I've another related question.
I am using a stream of records of the form (A, B, n) where the pair
(A,B) can occur multiple times. For example, you could have the
following rset of records -
A, B, 2
P, Q, 5
X, Y, 3
A, B, 8
A, B, 2
...
The data store has a set of columns - (key, count, s
On Mon, Oct 11, 2010 at 04:01, Arijit Mukherjee wrote:
> Hi All
>
> I've just started reading about Cassandra and writing simple tests
> using Cassandra 0.6.5 to see if we can use it for our product.
>
> I have a data store with a set of columns, like C1, C2, C3, and C4,
> but the columns aren't m
Just a follow on question to this - would PIG be a good fit for such questions?
Arijit
On 11 October 2010 14:31, Arijit Mukherjee wrote:
> Hi All
>
> I've just started reading about Cassandra and writing simple tests
> using Cassandra 0.6.5 to see if we can use it for our product.
>
> I have a d
Hi All
I've just started reading about Cassandra and writing simple tests
using Cassandra 0.6.5 to see if we can use it for our product.
I have a data store with a set of columns, like C1, C2, C3, and C4,
but the columns aren't mandatory. For example, there can be a list of
(k.v) pairs with only
On Fri, Oct 8, 2010 at 2:12 AM, Peter Schuller
wrote:
>> If your C* process dies and/or is killed you should not lose data. It's
>> written to the commit log before the client is acked, however that entry may
>> not have made it to disk yet in the case of commitlogsync=periodic. So, if
>> you ki
> If your C* process dies and/or is killed you should not lose data. It's
> written to the commit log before the client is acked, however that entry may
> not have made it to disk yet in the case of commitlogsync=periodic. So, if
> you kill the C* process you're fine. If you nicely restart the O
dnesday, October 06, 2010 8:53 PM
> *To:* user@cassandra.apache.org
> *Subject:* Re: Newbie Question about restarting Cassandra
>
>
>
> Rob is correct.
>
> drain is really on there for when you need the commit log to be empty (some
> upgrades or a complete backup of a shutdown cluster).
&g
Are there any data loss concerns if you have the commit log sync set to
periodic and are writing with CL One or Any?
From: Matthew Dennis [mailto:mden...@riptano.com]
Sent: Wednesday, October 06, 2010 8:53 PM
To: user@cassandra.apache.org
Subject: Re: Newbie Question about restarting
Rob is correct.
drain is really on there for when you need the commit log to be empty (some
upgrades or a complete backup of a shutdown cluster).
There really is no point to using to shutdown C* normally, just kill it...
On Wed, Oct 6, 2010 at 4:18 PM, Rob Coli wrote:
> On 10/6/10 1:13 PM, Aar
On 10/6/10 1:13 PM, Aaron Morton wrote:
To shutdown cleanly, say in a production system, use nodetool drain
first. This will flush the memtables and put the node into a read only
mode, AFAIK this also gives the other nodes a faster way of detecting
the node is down via the drained node gossiping
To shutdown cleanly, say in a production system, use nodetool drain first. This will flush the memtables and put the node into a read only mode, AFAIK this also gives the other nodes a faster way of detecting the node is down via the drained node gossiping it's new status. Then kill. AaronOn 07 Oct
Some relevant reading if you're interested:
http://dslab.epfl.ch/pubs/crashonly/
http://web.archive.org/web/20060426230247/http://crash.stanford.edu/
On Wed, Oct 6, 2010 at 1:46 PM, Scott Mann wrote:
> Yes. ctrl-C if running in the foreground. Use kill , if running
> in the background (see the
Yes. ctrl-C if running in the foreground. Use kill , if running
in the background (see the man page for kill if you are unfamiliar
with it). Killing Cassandra is the only way to terminate it.
On Wed, Oct 6, 2010 at 11:03 AM, Alberto Velandia wrote:
> So, is ctrl + C how you stop cassandra? or I'm
So, is ctrl + C how you stop cassandra? or I'm i better doing it another way?
Thanks
On Oct 6, 2010, at 11:59 AM, Norman Maurer wrote:
> CTRL + Z does not stop a programm it just suspend it. You will need to
> resume it with "fg" and then hit CTRL + C to stop it.
>
> For some basic background:
CTRL + Z does not stop a programm it just suspend it. You will need to
resume it with "fg" and then hit CTRL + C to stop it.
For some basic background:
http://linuxreviews.org/beginner/jobs/
Bye,
Norman
2010/10/6 Alberto Velandia :
> Hi I've stopped cassandra hitting Ctrl + Z and tried to rest
Hi I've stopped cassandra hitting Ctrl + Z and tried to restart it and got this
message:
INFO 11:46:16,039 JNA not found. Native methods will be disabled.
INFO 11:46:16,159 DiskAccessMode 'auto' determined to be mmap, indexAccessMode
is mmap
ERROR 11:46:16,449 Fatal exception during initializa
:54am
> To: user@cassandra.apache.org
> Subject: newbie question on how columns names are indexed/lucene
> limitations?
>
> Hello Cassandra Users,
>
> When use the RandomPartinionner and a simple ColumnFamily/Columns (i.e.
> no SuperColumns) my understanding is that one sig
are
scheduled to be fixed soon.
-Original Message-
From: "TuX RaceR"
Sent: Sunday, April 25, 2010 11:54am
To: user@cassandra.apache.org
Subject: newbie question on how columns names are indexed/lucene limitations?
Hello Cassandra Users,
When use the RandomPartinionner an
Hello Cassandra Users,
When use the RandomPartinionner and a simple ColumnFamily/Columns (i.e.
no SuperColumns) my understanding is that one signle Row can store
millions of columns.
If I look at the http://wiki.apache.org/cassandra/API, I understand that
I can get a subset of the millions o
The important distinction here is that you can slice on columns in a
row, but you can't slice on column family (or keyspace) names, because
the data isn't stored contiguously. The row, within the columnfamily,
is the unit of data storage and api focus.
On Sat, Apr 17, 2010 at 12:42 AM, Benjamin B
The multi-level dictionary explanation holds. Regex on keys like that
is something specific language implementations support, not something
inherent in a dictionary data structure. The table model is
particularly fraught because it drags in a lot of relational
assumptions, none of which hold. An
On Mon, Apr 12, 2010 at 9:48 AM, Colin Yates wrote:
> I was hoping I could do a get_range_slices specifying 'project*' for the
> columnFamily and a keyRange start: 20100107, end:20100109 but I
> get an error 'InvalidRequestException(why:unconfigured columnfamily
> project*)'.
I think you've been
Hi,
Assume I have:
SCF: Projects : {
CF:"project1": {
20100101: {cost:10, other columns},
20100102: {cost:10, other columns},
.
20100120: {cost 10, other columns}
},
CF:"project2": {
20100105: {cost:12, other columns}
.
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