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On Fri, Feb 21, 2014 at 8:53 PM, Yogi Nerella ynerella...@gmail.com wrote:
I am using CCM to install the servers, it is bringing in the source code,
is there any option for CCM which I can set only to download the binary,
just to make sure it is not bringing in the working copy of the code.
Had a look at the code, and this might be a race-condition like problem at the
function StorageService::checkForEndpointCollision and
StorageService::prepareReplacementInfo
To do a Gossiper.instance.doShadowRound(), the
MessagingService.instance().listen(FBUtilities.getLocalAddress()) must be
I still have some questions regarding the mapping. Please bear with me
if these are stupid questions. I am quite new to Cassandra.
The basic cassandra data model for a keyspace is something like this,
right?
SortedMapbyte[], SortedMapbyte[], PairLong, byte[]
^ row key.
You can setup the mail to deliver one per day as well.
On Saturday, February 22, 2014, Robert Wille rwi...@fold3.com wrote:
Yeah, it¹s called a rule. Set one up to delete everything from
user@cassandra.apache.org.
On 2/22/14, 10:32 AM, Paul LeoNerd Evans leon...@leonerd.org.uk
wrote:
A
I was looking at the indexing code in Cassandra server and couldn't
determine if the indexes use the same replication factor as the keyspace.
When I print out the details of the keyspace, it correctly show the
replication factor, which suggests the index for a given partition only
lives on the
Hi,
I'd like to implement decimal encoding for gocql but I'm wondering
what this should be compatible with. Is there some kind of wire format
that arbitrary precision numbers should adhere to to ensure
interoperability?
Cheers,
Ben
On Mon, Feb 24, 2014 at 11:47 AM, Sylvain Lebresne sylv...@datastax.comwrote:
I still have some questions regarding the mapping. Please bear with me
if these are stupid questions. I am quite new to Cassandra.
The basic cassandra data model for a keyspace is something like this,
right?
Not sure what you mean by the question.
Are you talking about the structure of BigDecimal in java? If that is your
question, the java's BigDecimal uses the first 4 bytes for scale and
remaining bytes for BigInteger
On Mon, Feb 24, 2014 at 10:47 AM, Ben Hood 0x6e6...@gmail.com wrote:
Hi,
Hi,
My requirements include a system that can handle friend based highscore
lists (as a user I have a bunch of friends from various social sites like
Facebook). The user must have a highscore list that consist of his friends
only.
I have implemented this using the users ID as partition key and
Hey Peter,
On Mon, Feb 24, 2014 at 5:25 PM, Peter Lin wool...@gmail.com wrote:
Not sure what you mean by the question.
Are you talking about the structure of BigDecimal in java? If that is your
question, the java's BigDecimal uses the first 4 bytes for scale and
remaining bytes for
ok, I think I understand.
I took a look at the code. Java uses big endian encoding. I don't know if
GO defaults to big or little. In my port of Hector to C#, I reverse the
bytes due to the fact that .Net uses little endian.
hope that helps
On Mon, Feb 24, 2014 at 12:51 PM, Ben Hood
On Mon, Feb 24, 2014 at 6:09 PM, Peter Lin wool...@gmail.com wrote:
I took a look at the code. Java uses big endian encoding. I don't know if GO
defaults to big or little. In my port of Hector to C#, I reverse the bytes
due to the fact that .Net uses little endian.
Cool - I'll take this as a
On Mon, 24 Feb 2014 17:51:54 +
Ben Hood 0x6e6...@gmail.com wrote:
Or in the absence of a spec, just a heads up from other language
driver implementors as to what approach they've taken.
I reverse-engineered it by using cqlsh to insert lots of known
numerical values, then seeing what the
Hey Paul,
On Mon, Feb 24, 2014 at 6:40 PM, Paul LeoNerd Evans
leon...@leonerd.org.uk wrote:
And the unit tests live here:
https://metacpan.org/source/PEVANS/Protocol-CassandraCQL-0.11/t/02types.t#L111
Very cool - I'll port these examples to the gocql marshaling test
suite - kudos to you
I did the same thing :)
I inserted lots of bigDecimal in Cqlsh and read it from my C# client. Then
I did the opposite, inserts BigDecimal from C# and query it from cqlsh.
Once both directions worked, I had unit tests to make sure data is cross
platform compatible.
I know older versions of
On Mon, 24 Feb 2014 13:55:07 -0500
Peter Lin wool...@gmail.com wrote:
I did the same thing :)
I inserted lots of bigDecimal in Cqlsh and read it from my C# client.
Then I did the opposite, inserts BigDecimal from C# and query it from
cqlsh. Once both directions worked, I had unit tests to
Hi,
is there a history/list showing which major (as in x.y) versions of
Cassandra were released on which date?
Or is the list on Wikipedia complete? Did 2.0 come after 1.2?
Thanks!
On Mon, Feb 24, 2014 at 7:02 PM, Paul LeoNerd Evans
leon...@leonerd.org.uk wrote:
On Mon, 24 Feb 2014 13:55:07 -0500
Peter Lin wool...@gmail.com wrote:
I did the same thing :)
I inserted lots of bigDecimal in Cqlsh and read it from my C# client.
Then I did the opposite, inserts BigDecimal
I’m just converting some code from SQL to CQL. The code can throw a
SQLException. however I note that there is no equivalent in CQL, I’m just
wondering whys this is the case ?
Regards
Andy
The University of Dundee is a registered Scottish Charity, No: SC015096
Hello,
Check out the full version list here:
https://issues.apache.org/jira/browse/CASSANDRA?selectedTab=com.atlassian.jira.plugin.system.project:versions-panelsubset=-1
Jonathan
Jonathan Lacefield
Solutions Architect, DataStax
(404) 822 3487
http://www.linkedin.com/in/jlacefield
On Mon, 24 Feb 2014 19:14:48 +
Ben Hood 0x6e6...@gmail.com wrote:
So I have a question about the encoding of 0: \x00\x00\x00\x00\x00.
The first four octets are the decimal shift (0), and the remaining ones
(one in this case) encode a varint - 0 in this case. So it's
0 * 10**0
literally
I don't know if it's by design or if it's by oversight that the data types
aren't part of the binary protocol specification. I had to reverse engineer
how to encode and decode all of them for the Ruby driver. There were
definitely a few bugs in the first few versions that could have been
avoided
(I posted this on the client-dev list the other day, but that list seems
dead so I'm cross posting, sorry if it's the wrong thing to do)
Hi,
Is there any documentation on how CQL clients should handle the new user
defined types coming in 2.1? There's nothing in the protocol specification
on how
Hi Tupshin,
Thanks for your help; I appreciate it.
Could I do something like the following?
Given the same table you started with:
x | y | t | z
---+---+---+
a | 1 | 2 | 10
a | 2 | 2 | 20
I'd like to write a compare-and-set that does something like:
If there is a row with (x,y,t,z) =
On Mon, Feb 24, 2014 at 7:43 PM, Paul LeoNerd Evans
leon...@leonerd.org.uk wrote:
On Mon, 24 Feb 2014 19:14:48 +
Ben Hood 0x6e6...@gmail.com wrote:
So I have a question about the encoding of 0: \x00\x00\x00\x00\x00.
The first four octets are the decimal shift (0), and the remaining ones
On Mon, Feb 24, 2014 at 7:50 PM, Theo Hultberg t...@iconara.net wrote:
I don't know if it's by design or if it's by oversight that the data types
aren't part of the binary protocol specification. I had to reverse engineer
how to encode and decode all of them for the Ruby driver. There were
On Mon, Feb 24, 2014 at 7:52 PM, Theo Hultberg t...@iconara.net wrote:
(I posted this on the client-dev list the other day, but that list seems
dead so I'm cross posting, sorry if it's the wrong thing to do)
I didn't even realize there was a list for driver implementors - is
this used at all?
Hi Clint,
That does appear to be an omission in CQL3. It would be possible to
simulate it by doing
BEGIN BATCH
UPDATE foo SET z = 10 WHERE x = 'a' AND y = 1 IF t= 2 AND z=10;
UPDATE foo SET t = 5,z=6 where x = 'a' AND y = 4
APPLY BATCH;
However, this does a redundant write to the first
And, FWIW, I was just informed that the ticket that would have the actual
functionality you are looking for exists, but is not scheduled for
implementation due to lack of agreement about syntax to make it work:
https://issues.apache.org/jira/browse/CASSANDRA-5633
-Tupshin
On Mon, Feb 24, 2014
Have you heard of this https://github.com/Comcast/cmb? Maybe it's along the
path of what you're looking for.
On 22 February 2014 22:33, Jonathan Haddad j...@jonhaddad.com wrote:
Upfront TLDR: We want to do stuff (reindex documents, bust cache) when
changed data from DC1 shows up in DC2.
Hi,
when building and running Cassandra 2.0.5 from the git repository, the log
is full of lines like these
00:01:42.286 [CompactionExecutor:1] DEBUG
o.a.c.d.compaction.CompactionManager - Checking system.local
When building and running 2.1.0/trunk the log settings are however fine. Is
there any
Hi Kasper,
I am assuming that your friend list is symmetric (i.e. If I am your friend
then you are also my friend), which your comments seem to indicate.
First, I would suggest that you drop the friends score as a part of the
clustering key, which eliminates the need to read-before-write.
With
The host would not join the ring after more clean bootstrap attempts.
Noticed nodetool netstats, even though doesn't repair any streaming, does
constantly report Nothing streaming from 3 specific hosts in the ring.
$ nodetool netstats
xss = -ea -d64
On Mon, Feb 24, 2014 at 4:27 PM, Timmy Turner timm.t...@gmail.com wrote:
I already tried setting
log4j.rootLogger=ERROR,stdout,R
it in conf/log4j-server.properties, but that did not seem to have any
effect.
Not sure why this isn't working, but you can set log levels via JMX. Use
Hello,
We are working on our data model for Cassandra and we have a need to use
surrogate keys (timeuuid) and not the natural key for one of our tables but
this causes a possible timing issue when determining if a row already
exists.Are there any best practices or patterns for Cassandra for using
On 02/24/2014 09:00 PM, John Stager wrote:
Hello,
We are working on our data model for Cassandra and we have a need to use
surrogate keys (timeuuid) and not the natural key for one of our tables
but this causes a possible timing issue when determining if a row
already exists.Are there any best
Thanks Michael, I will take a look at LWT for the future but unfortunately we
are using Cassandra 1.2 ( I should have stated that, sorry). Are there any
recommendations for 1.2, or do you just have to deal with him the race
condition and possible duplicate data.
Thanks again
Sent from my
Hi Jonathan--
First, best wishes for success with your platform.
Frankly, I think the architecture you described is only going to cause
you major trouble. I'm left wondering why you don't either use something
like XMPP (of which several implementations can handle this kind of
federated scenario)
On 02/24/2014 09:24 PM, john.sta...@gmail.com wrote:
Thanks Michael, I will take a look at LWT for the future but
unfortunately we are using Cassandra 1.2 ( I should have stated that,
sorry). Are there any recommendations for 1.2, or do you just have to
deal with him the race condition and
Thanks for the input Todd. I've considered a few of the options you've
listed. I've ruled out redis because it's not really built for multi DC.
I've got nothing against XMPP, or SQS. However, they introduce race
conditions as well as all sorts of edge cases (missed messages, for
instance).
There hasn't been any activity (apart from my question) since december, and
only sporadic activity before that, so I think it's essentially dead.
http://www.mail-archive.com/client-dev@cassandra.apache.org/
T#
On Mon, Feb 24, 2014 at 10:34 PM, Ben Hood 0x6e6...@gmail.com wrote:
On Mon, Feb
Hi, I am trying to mix CAS and TTL and am wondering if this behavior that I
am seeing is expected.
I'm on 2.0.2 and using the java datastax 2.0.0-rc3 client.
In my application, a server claims a row by assigning a value to a row
using CAS, expecting the column to start out null. The column has a
For the case where you don't get the update, is your whole row removed when
TTL expires? If so, you're essentially looking at a non-existing row, and I
think it's not too surprising that a if col=null test will behave
differently; I personally wouldn't call it a bug. If you're dealing with
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