/issues.apache.org/jira/browse/CASSANDRA-11033>, which is fixed in
> 3.0.4 and 3.4.
>
> I'm not sure about the CodecNotFoundException, can you reproduce that one
> reliably?
>
> On Thu, Aug 18, 2016 at 10:52 AM, Drew Kutcharian <mailto:d...@venarc.com>> wrote:
Hi All,
I have a UDF/UDA that returns a map of date -> TupleValue.
CREATE OR REPLACE FUNCTION min_max_by_timestamps_udf(state map>>, flake blob)
RETURNS NULL ON NULL INPUT
RETURNS map>>
LANGUAGE java
CREATE OR REPLACE AGGREGATE min_max_by_timestamps(blob)
SFUNC min_max_by_timestamps_udf
STYPE ma
OK to make things even more confusing, the “Release” files in the Apache Repo
say "Origin: Unofficial Cassandra Packages”!!
i.e. http://dl.bintray.com/apache/cassandra/dists/35x/:Release
> On May 17, 2016, at 12:11 PM, Drew Kutcharian wrote:
>
> BTW, the language on this page s
BTW, the language on this page should probably change since it currently sounds
like the official repo is the DataStax one and Apache is only an “alternative"
http://wiki.apache.org/cassandra/DebianPackaging
- Drew
> On May 17, 2016, at 11:35 AM, Drew Kutcharian wrote:
>
&g
Thanks Eric.
> On May 17, 2016, at 7:50 AM, Eric Evans wrote:
>
> On Mon, May 16, 2016 at 5:19 PM, Drew Kutcharian wrote:
>>
>> What’s the difference between the two “Community” repositories Apache
>> (http://www.apache.org/dist/cassandra/debian) and DataStax
>
Hi,
What’s the difference between the two “Community” repositories Apache
(http://www.apache.org/dist/cassandra/debian) and DataStax
(http://debian.datastax.com/community/)?
If they are just mirrors, then it seems like the DataStax one is a bit behind
(version 3.0.6 is available on Apache but
Hi,
What’s the 3.0.6 release date? Seems like the code has been frozen for a few
days now. I ask because I want to install Cassandra on Ubuntu 16.04 and
CASSANDRA-10853 is blocking it.
Best,
Drew
of Cassandra is scalability and distributed
> processing, right?
>
> -- Jack Krupansky
>
> From: Drew Kutcharian
> Sent: Friday, August 29, 2014 7:31 PM
> To: user@cassandra.apache.org
> Subject: Re: Data partitioning and composite partition key
>
> Hi Jack,
&
just opened this JIRA https://issues.apache.org/jira/browse/CASSANDRA-7850
- Drew
On Aug 29, 2014, at 4:36 PM, Robert Coli wrote:
> On Fri, Aug 29, 2014 at 3:48 PM, Drew Kutcharian wrote:
> AFAIK, currently Cassandra partitions (thrift) rows using the row key,
> basically uses
ug 29, 2014, at 3:58 PM, Jack Krupansky wrote:
> With CQL3, you, the developer, get to decide whether to place a primary key
> column in the partition key or as a clustering column. So, make sensorID the
> partition key and datetime as a clustering column.
>
> -- Jack Krupansky
&
Hey Guys,
AFAIK, currently Cassandra partitions (thrift) rows using the row key,
basically uses the hash(row_key) to decide what node that row needs to be
stored on. Now there are times when there is a need to shard a wide row, say
storing events per sensor, so you’d have sensorId-datetime row
)
> if 1 is not successful then the batch "fails"
> - this is because it couldn't make it to the batchlog table for execution
>
> Hope this helps. I believe this is the best i can do for you at the moment.
>
> Thanks,
>
> Jonathan Lacefield
>
hat helps.
>
> Thanks,
>
> Jonathan
>
> Jonathan Lacefield
> Solutions Architect, DataStax
> (404) 822 3487
>
>
>
>
>
>
> On Mon, Mar 17, 2014 at 1:38 PM, Drew Kutcharian wrote:
> Hi Jonathan,
>
> I’m still a bit unclear on this. Say I ha
than Lacefield
> Solutions Architect, DataStax
> (404) 822 3487
>
>
>
>
>
>
> On Sat, Mar 15, 2014 at 12:23 PM, Drew Kutcharian wrote:
> Hi Guys,
>
> How do Atomic Batches and Consistency Level relate to each other? More
> specifically:
>
> -
Hi Guys,
How do Atomic Batches and Consistency Level relate to each other? More
specifically:
- Is consistency level set/applicable per statement in the batch or the batch
as a whole?
- Say if I write a Logged Batch at QUORUM and read it back at QUORUM, what can
I expect at normal, single nod
LOCAL_QUORUM (failing
> >>> the whole update if that doesn’t work - stale data is OK if >1 node is
> >>> down), and we read at LOCAL_QUORUM, but (because stale data is better
> >>> than no data), we will fall back per read request to LOCAL_ONE if we
&
Hi Guys,
I wanted to get some clarification on what happens when you write and read at
consistency level 1. Say I have a keyspace with replication factor of 3 and a
table which will contain write-once/read-only wide rows. If I write at
consistency level 1 and the write happens on node A and I r
Lebresne wrote:
>
>> On Mon, Feb 10, 2014 at 7:16 PM, Drew Kutcharian wrote:
>> Hey Guys,
>>
>> How can I define custom CQL3 functions (similar to dateOf, now, etc)?
>
> You can't, there is currently no way to define custom functions.
>
> --
> Sylvain
Hey Guys,
How can I define custom CQL3 functions (similar to dateOf, now, etc)?
Cheers,
Drew
You’re right. I didn’t catch that. No need to have email in the PRIMARY KEY.
On Jan 21, 2014, at 5:11 PM, Jon Ribbens
wrote:
> On Tue, Jan 21, 2014 at 10:40:39AM -0800, Drew Kutcharian wrote:
>> Thanks, I was actually thinking of doing that. Something along the lines
>>
is an additional implementation detail, and could be
> external to Cassandra. But the approach you describe accurately describes
> what I would do as a first pass, at least.
>
> -Tupshin
>
> On Jan 21, 2014 10:41 AM, "Drew Kutcharian" wrote:
> Thanks, I was actu
On Jan 21, 2014 9:17 AM, "Drew Kutcharian" wrote:
> A shameful bump ;)
>
> > On Jan 20, 2014, at 2:14 PM, Drew Kutcharian wrote:
> >
> > Hey Guys,
> >
> > I’m new to CQL (but have been using C* for a while now). What would be the
> > best way to model
A shameful bump ;)
> On Jan 20, 2014, at 2:14 PM, Drew Kutcharian wrote:
>
> Hey Guys,
>
> I’m new to CQL (but have been using C* for a while now). What would be the
> best way to model a users table using CQL/Cassandra 2.0 Lightweight
> Transactions where we would like
rd into it(via cqlsh).
>
> Wondering why it gives "No node available"
>
> Even though simple insert queries(without CAS) works!
>
> -Vivek
>
>
> On Tue, Jan 21, 2014 at 11:33 AM, Drew Kutcharian wrote:
> If you are trying this out on a single node, make
If you are trying this out on a single node, make sure you set the
replication_factor of the keyspace to one.
On Jan 20, 2014, at 7:41 PM, Vivek Mishra wrote:
> Single node and default consistency. Running via cqsh
>
>
> On Tue, Jan 21, 2014 at 1:47 AM, sankalp kohli wrote:
> Also do you ha
Hey Guys,
I’m new to CQL (but have been using C* for a while now). What would be the best
way to model a users table using CQL/Cassandra 2.0 Lightweight Transactions
where we would like to have:
- A unique TimeUUID as the primary key of the user
- A unique email address used for logging in
In t
t will be many
> extra writes but that is ok.
>
> Other option is turn on row cache and try read before write. It is a good
> case for row cache because it is a very small data set.
>
> On Thursday, April 4, 2013, Drew Kutcharian wrote:
> > I don't really need
have column X that was added between time y and time
> z". Remember with few distinct column names that reverse index of column to
> row is going to be a very big list.
>
>
> On Thu, Apr 4, 2013 at 5:45 PM, Drew Kutcharian wrote:
> Hi Edward,
>
> I anticipate that the column
pty
> byte array (new byte[0]{}) as the start and finish you get back all the
> columns. From there you can return only the columns to the user in a format
> that you like.
>
>
> On Thu, Apr 4, 2013 at 2:18 PM, Drew Kutcharian wrote:
> Hey Guys,
>
> I'm worki
Hey Guys,
I'm working on a project and one of the requirements is to have a schema free
CF where end users can insert arbitrary key/value pairs per row. What would be
the best way to know what are all the "keys" that were inserted (preferably w/o
any locking). For example,
Row1 => key1 -> XXX,
Sometimes you can write the plus one into a new column and then apply the
> changes in the reading client thread.
>
> Cheers
>
> -
> Aaron Morton
> Freelance Cassandra Consultant
> New Zealand
>
> @aaronmorton
> http://www.thelastpickle.com
>
Hi Guys,
Are there any short/long term plans to support UPDATE operations that require
read-before-write, such as increment on a numeric non-counter column?
i.e.
UPDATE CF SET NON_COUNTER_NUMERIC_COLUMN = NON_COUNTER_NUMERIC_COLUMN + 1;
UPDATE CF SET STRING_COLUMN = STRING_COLUMN + "postfix";
gt; compression would be much of a workaround because again, that's more about
> how compression is working than how Cassandra use it.
>
> At the end of the day, I really think the best choice is to try it and decide
> for yourself if it does more good than harm or the converse.
ompression was not
> effective.
>
> On Mon, Mar 18, 2013 at 9:08 PM, Drew Kutcharian wrote:
> That's what I originally thought but the OOYALA presentation from C*2012 got
> me confused. Do you guys know what's going on here?
>
> The video:
> http://www.youtub
3, Sylvain Lebresne wrote:
> > The way compression is implemented, it is oblivious to the CF being
> > wide-row or narrow-row. There is nothing intrinsically less efficient in
> > the compression for wide-rows.
> > --
> > Sylvain
> >
> > On Fri, Mar 15, 2013
Hey Guys,
I remember reading somewhere that C* compression is not very effective when
most of the CFs are in wide-row format and some folks turn the compression off
and use disk level compression as a workaround. Considering that wide rows with
composites are "first class citizens" in CQL3, is
nd OR SSD disks.
>
> We do not use c* as an "in-memory store". However for many of our datasets we
> do not have a separate caching tier. In those cases cassandra is both our
> "database" and our "in-memory store" if you want to use those terms :)
>
Aaron Morton
> Freelance Cassandra Developer
> New Zealand
>
> @aaronmorton
> http://www.thelastpickle.com
>
> On 5/03/2013, at 9:51 AM, Drew Kutcharian wrote:
>
>> Thanks Ben, that article was actually the reason I started thinking about
>> removing memcached.
&
012/07/benchmarking-high-performance-io-with.html
>
> Netflix used Cassandra with SSDs and were able to drop their memcache layer.
> Mind you they were not using it purely as an in memory KV store.
>
> Ben
> Instaclustr | www.instaclustr.com | @instaclustr
>
>
>
> On 05/
Hi Guys,
I'm thinking about using Cassandra as an in-memory key/value store instead of
memcached for a new project (just to get rid of a dependency if possible). I
was thinking about setting the replication factor to 1, enabling off-heap
row-cache and setting gc_grace_period to zero for the CF
Hey Dean, do you guys have any thoughts on how to implement it yet?
On Feb 15, 2013, at 6:18 AM, "Hiller, Dean" wrote:
> Yes, this is in PlayOrm's roadmap as well but not there yet.
>
> Dean
>
> On 2/13/13 6:42 PM, "Drew Kutcharian" wrote:
>
&g
nfused what you are looking to do.
>>
>> CQL3 syntax (SELECT * FROM keyspace.cf WHERE user = 'cooldude') has
>> nothing to do with thrift client calls (such as multiget_slice)
>>
>> What is your goal here?
>>
>> Best,
>> michael
>>
Hi Guys,
What's the syntax for multiget_slice in CQL3? How about multiget_count?
-- Drew
Hi Guys,
Has anyone on this mailing list tried to build a bounding box style (get the
records inside a known bounding box) geospatial search? I've been researching
this a bit and seems like the only attempt at this was by SimpleGeo guys, but
there isn't much public info out there on how they di
gt; session = cluster.connect(getInitParameter("keyspace"));
>
> I have queries that i have begin unlogged batch instead of begin batch
>
> Hopefully it helps
>
>
> On Wed, Feb 13, 2013 at 12:23 PM, Drew Kutcharian wrote:
> @Shahryar/Gabriel
> I kn
.
> Occasionally a cross post makes sense.
>
> Edward
>
> On Wed, Feb 13, 2013 at 12:23 PM, Drew Kutcharian wrote:
>> @Shahryar/Gabriel
>> I know the source code is nicely documented, but I couldn't find much info
>> on:
>> 1. Creating/submitting ato
t;
>> Source code has enough documentation in it, apparently this is how they do
>> it with new stuff. Start with Custer class, it tells you how to write. If
>> you still had problem let me know, I can give you sample code.
>>
>>
>> On Tue, Feb 12, 2013 at 9
Are there any documentation/examples available for DataStax java-driver besides
what's in the GitHub repo?
-- Drew
ssandra client mailing list:
> client-...@cassandra.apache.org.
>
> --
> Sylvain
>
>
> On Tue, Feb 12, 2013 at 4:44 AM, Drew Kutcharian wrote:
> Hey Guys,
>
> Is the new atomic batch feature in Cassandra 1.2 available via the thrift
> API? If so, how can I use it?
>
> -- Drew
>
>
Aaron Morton
> Freelance Cassandra Developer
> New Zealand
>
> @aaronmorton
> http://www.thelastpickle.com
>
> On 6/02/2013, at 11:15 AM, Drew Kutcharian wrote:
>
>> Thanks Aaron, so will there only be one "value" for each counter column per
>> sstable just li
Hey Guys,
Is the new atomic batch feature in Cassandra 1.2 available via the thrift API?
If so, how can I use it?
-- Drew
ored on disk?
> Same as regular CF's.
>
>> How do they effect compaction?
> None.
>
> Cheers
>
> -
> Aaron Morton
> Freelance Cassandra Developer
> New Zealand
>
> @aaronmorton
> http://www.thelastpickle.com
>
> On
Hey Guys,
Are there any specific operational considerations one should make when using
counter columns families? How are counter column families stored on disk? How
do they effect compaction?
-- Drew
t to keep.
>
> Cheers
>
> -
> Aaron Morton
> Freelance Cassandra Developer
> New Zealand
>
> @aaronmorton
> http://www.thelastpickle.com
>
> On 3/01/2013, at 8:37 AM, Drew Kutcharian wrote:
>
>> Happy New Year Everyone!
>>
>
Happy New Year Everyone!
What's the best way to model "unread messages count" in Cassandra? I have a
UserMessage CF where the row key is the user id and the column name is the
message id (timeuuid) and I store the message and the status (READ/UNREAD) in
the value column. I would like to be able
iously encourage people to try Java 7 as much as possible and report any
>> problem they may run into, but I would have though this goes without saying.
>>
>>
>> On Fri, Dec 14, 2012 at 4:05 AM, Rob Coli wrote:
>>>
>>> On Thu, Dec 13, 2012 at 11:43 AM, Drew Kut
Hey Guys,
With Java 6 begin EOL-ed soon
(https://blogs.oracle.com/java/entry/end_of_public_updates_for), what's the
status of Cassandra's Java 7 support? Anyone using it in production? Any
outstanding *known* issues?
-- Drew
st of keeping the
property file in sync) when it comes to growth. What do you think?
-- Drew
On Nov 5, 2012, at 7:50 PM, Rob Coli wrote:
> On Mon, Nov 5, 2012 at 12:23 PM, Drew Kutcharian wrote:
>>> Switching from SimpleStrategy to RackAware can be a pain.
>>
>> Can yo
; On 11/5/12 9:59 AM, "zGreenfelder" wrote:
>
>> On Mon, Nov 5, 2012 at 12:49 PM, Drew Kutcharian wrote:
>>> Hey Guys,
>>>
>>> What should I look out for when deploying a single node installation?
>>> We want to launch a product that uses Cassand
Hey Guys,
What should I look out for when deploying a single node installation? We want
to launch a product that uses Cassandra and since we are going to have very
little load initially, we were thinking of just going live with one node and
eventually add more nodes as the load (hopefully) grow
>
> > Depending on your needs, you could simply duplicate the comments in two
> > separate CFs with the column names including time in one and the vote in
> > the other. If you allow for updates to the comments, that would pose
> > some issues you'd need to solve at
Hi Guys,
Wondering what would be the best way to model a flat (no sub comments, i.e.
twitter) comments list with support for voting (where I can sort by create time
or votes) in Cassandra?
To demonstrate:
Sorted by create time:
- comment 1 (5 votes)
- comment 2 (1 votes)
- comment 3 (no votes)
bump
On Jul 29, 2012, at 11:03 PM, Drew Kutcharian wrote:
> Hi,
>
> What's the correct procedure to drop a keyspace? When I drop a keyspace, the
> files of that keyspace don't get deleted. There is a JIRA on this:
>
> https://issues.apache.org/jira/browse/CASSANDR
Hi,
What's the correct procedure to drop a keyspace? When I drop a keyspace, the
files of that keyspace don't get deleted. There is a JIRA on this:
https://issues.apache.org/jira/browse/CASSANDRA-4075
Is this a bug or I'm missing something?
I'm using Cassandra 1.1.2 on Ubuntu Linux with Sun JV
-1000-8080-808080808080'.
> The highest is '--1fff-bf7f-7f7f7f7f7f7f'.
>
> On Tue, Apr 24, 2012 at 12:47 PM, Drew Kutcharian wrote:
> Thanks. So looking at the code, to get the lowest possible TimeUUID value
> using your function I should just call co
Thanks. So looking at the code, to get the lowest possible TimeUUID value using
your function I should just call convert_time_to_uuid(0) ?
On Apr 24, 2012, at 10:15 AM, Tyler Hobbs wrote:
> Yes, I have tested it.
>
> On Tue, Apr 24, 2012 at 12:08 PM, Drew Kutcharian wrote:
> Than
pache.org/msg00125.html
>
> Looking at the linked pycassa code might be the most useful thing.
>
> On Tue, Apr 24, 2012 at 1:46 AM, Drew Kutcharian wrote:
> Hi All,
>
> Considering that UUIDs are compared as numbers in Java [1], what are the
> lowest and highest possible values
Hi All,
Considering that UUIDs are compared as numbers in Java [1], what are the lowest
and highest possible values a valid UUID can have? How about TimeUUIDs?
The reason I ask is that I would like to pick a "default" UUID value in a
composite column definition like Composite(UUID1, UUID2) wher
Hi Guys,
Sorry for posting this here, but I figured there should be a lot of smart
Network/System Admins on this list which can recommend a good mailing
list/forum for questions related to networking and rack/datacenter setups.
Best,
Drew
s possible with the cli. You'd have to embellish
> CliClient.Function
>
>
>
> On 03/23/2012 09:59 PM, Drew Kutcharian wrote:
>> I actually have a custom type, I put the BytesType in the example to
>> demonstrate the issue is not with my custom type.
>>
&g
I actually have a custom type, I put the BytesType in the example to
demonstrate the issue is not with my custom type.
-- Drew
On Mar 23, 2012, at 6:46 PM, Dave Brosius wrote:
> I think you want
>
> assume UserDetails validator as bytes;
>
>
>
> On 03/23/2012 08:0
Hi Everyone,
I'm having an issue with cassandra-cli's assume command with a custom type. I
tried it with the built-in BytesType and got the same error:
[default@test] assume UserDetails validator as
org.apache.cassandra.db.marshal.BytesType;
Syntax error at position 35: missing EOF at '.'
I al
;
> One other disadvantage is the lack of "consistency level" and "replication".
> Both ware part of the high availability / redundancy. So you would really
> need to backup your single-node-"cluster" to some other external location.
>
> Good luck!
>
Hi,
We are working on a project that initially is going to have very little data,
but we would like to use Cassandra to ease the future scalability. Due to
budget constraints, we were thinking to run a single node Cassandra for now and
then add more nodes as required.
I was wondering if it is
Hi Everyone,
I noticed that the DataStax's distribution of Cassandra uses Jsvc. There's also
Tanuki Java Service Wrapper
(http://wrapper.tanukisoftware.com/doc/english/download.jsp) that does a lot
more than simply launching a Java process, for example it monitors the JVM and
even restarts fai
What are the implications of using short vs long column names? Is it better to
use short column names or longer ones?
I know for MongoDB you are better of using short field names
http://www.mongodb.org/display/DOCS/Optimizing+Storage+of+Small+Objects Does
this apply to Cassandra column names?
Hi Everyone,
Let's say I have the following object which I would like to save in Cassandra:
class User {
UUID id; //row key
String name; //columnKey: "name", columnValue: the name of the user
String description; //columnKey: "description", columnValue: the description
of the user
}
Descri
> additional check if the entry for email id exists in EmailUUIDIndex then the
> request for registration can be rejected right away.
>
> Make sense?
>
> -Naren
>
> On Fri, Jan 6, 2012 at 4:00 PM, Drew Kutcharian wrote:
> So what are the common RIGHT solutions/tools fo
.
>
>
>
> On Fri, Jan 6, 2012 at 2:35 PM, Drew Kutcharian wrote:
> Thanks everyone for the replies. Seems like there is no easy way to handle
> this. It's very surprising that no one seems to have solved such a common use
> case.
>
> -- Drew
>
> On Jan
gh, see (Locks based
> on ephemeral nodes) from the zk mailing list in October:
> http://mail-archives.apache.org/mod_mbox/zookeeper-user/201110.mbox/thread?0
>
> -Bryce
>
> On Fri, 6 Jan 2012 13:36:52 -0800
> Drew Kutcharian wrote:
>> Bryce,
>>
>> I'm no
n Fri, 6 Jan 2012 10:03:38 -0800
> Drew Kutcharian wrote:
>> I know that this can be done using a lock manager such as ZooKeeper
>> or HazelCast, but the issue with using either of them is that if
>> ZooKeeper or HazelCast is down, then you can't be sure about the
&
Yes, my issue is with handling concurrent requests. I'm not sure how your logic
will work with eventual consistency. I'm going to have the same issue in the
"tracker" CF too, no?
On Jan 6, 2012, at 10:38 AM, Mohit Anchlia wrote:
> On Fri, Jan 6, 2012 at 10:03 AM, Drew K
Hi Everyone,
What's the best way to reliably have unique constraints like functionality with
Cassandra? I have the following (which I think should be very common) use case.
User CF
Row Key: user email
Columns: userId: UUID, etc...
UserAttribute1 CF:
Row Key: userId (which is the uuid that's map
Hey Guys,
I just came across http://wiki.apache.org/cassandra/ByteOrderedPartitioner and
it got me thinking. If the row keys are java.util.UUID which are generated
randomly (and securely), then what type of partitioner would be the best? Since
the key values are already random, would it make a
RAID 0 is the fastest, but you'll lose the whole array if you lose a drive. One
thing to keep in mind is that SSDs get slower as they get filled up and closer
to their capacity due to garbage collection.
If you want more info on how SSDs perform in general, Percona guys have done
extensive test
,
Drew
On Apr 13, 2011, at 4:51 PM, Eric Evans wrote:
> On Wed, 2011-04-13 at 15:07 -0700, Drew Kutcharian wrote:
>> username = 'jericevans'
>> password = '**'
>> useruuid = str(uuid())
>> columns = {'id': useruuid, 'user
Hi Everyone,
I was going thru Cassandra By Example Blog
http://www.rackspace.com/cloud/blog/2010/05/12/cassandra-by-example/ and I had
a question about the user sign up section:
username = 'jericevans'
password = '**'
useruuid = str(uuid())
columns = {'id': useruuid, 'username': usernam
I'm interested in this too, but I don't think this can be done with Cassandra
alone. Cassandra doesn't support transactions. I think hector can retry
operations, but I'm not sure about the atomicity of the whole thing.
On Apr 8, 2011, at 1:26 PM, Alex Araujo wrote:
> Hi, I was wondering if th
I just updated added a new page to the wiki:
http://wiki.apache.org/cassandra/SecondaryIndexes
On Apr 3, 2011, at 7:37 PM, Drew Kutcharian wrote:
> Yea I know, I just didn't know anyone can update it.
>
>
> On Apr 3, 2011, at 1:26 PM, Joe Stump wrote:
>
>>
>
Yea I know, I just didn't know anyone can update it.
On Apr 3, 2011, at 1:26 PM, Joe Stump wrote:
>
> On Apr 3, 2011, at 2:22 PM, Drew Kutcharian wrote:
>
>> Thanks Tyler. Can you update the wiki with these answers so they are stored
>> there for others to see too?
>
> Dude, it's a wiki.
implemented as a slightly
> special separate column family with the indexed value serving as the key;
> most of the properties of secondary indexes follow from that.
>
> On Sun, Apr 3, 2011 at 2:28 PM, Drew Kutcharian wrote:
> Hi Everyone,
>
> I posted the following email a co
Hi Everyone,
I posted the following email a couple of days ago and I didn't get any
responses. Makes me wonder, does anyone on this list know/use Secondary
Indexes? They seem to me like a pretty big feature and it's a bit disappointing
to not be able to get a documentation on it.
The only thin
t; - standard CF to hold the blogs for a user, key is the user id and each
> column is the blog key
>
> Thats not a great schema but it's a simple starting point you can build on
> and refine using things like secondary indexes and doing more/less in the
> same
be able to have a number
> of duplicate timestamps.
>
> On Wed, Mar 30, 2011 at 4:24 PM, Drew Kutcharian wrote:
>> Hi Ed,
>>
>> There's no need to re-invent the wheel that's pretty much what Twitter
>> Snowflake does. The way it works is it creates a
Hi Everyone,
I just read Jonathan Ellis' great post on Secondary Indexes
(http://www.datastax.com/dev/blog/whats-new-cassandra-07-secondary-indexes) and
I was wondering where I can find a bit more info on them. I would like to know:
1) Are there in limitations beside the hash properties (no be
leaving a certain number of low order bits of the clock
> sequence empty and then incrementing those when duplicate timestamps
> were generated rather than incrementing the timestamp the way UUIDGen
> currently does.
>
> On Wed, Mar 30, 2011 at 10:08 AM, Drew Kutcharian wrote:
>&
Hi Everyone,
Anyone on this list interested in a remote very flexible contract gig? If yes,
please contact me directly.
Thanks,
Drew Kutcharian
Chief Technology Officer
Venarc Inc. www.venarc.com
Phone: 818-524-2500
Hi Roshan,
You probably want to look at Twitter's Snowflake:
https://github.com/twitter/snowflake
There's also another Java variant: https://github.com/earnstone/eid
- Drew
On Mar 30, 2011, at 6:08 AM, Roshan Dawrani wrote:
> Hi,
>
> Is there any way I can get multiple unique time UUIDs for
I'm pretty new to Cassandra and I would like to get your advice on modeling.
The object model of the project that I'm working on will be pretty close to
Blogger, Tumblr, etc. (or any other blogging website).
Where you have Users, that each can have many Blogs and each Blog can have many
comments
I'm pretty new to Cassandra and I would like to get your advice on modeling.
The object model of the project that I'm working on will be pretty close to
Blogger, Tumblr, etc. (or any other blogging website).
Where you have Users, that each can have many Blogs and each Blog can have many
comments
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