a-driver-3-0-0-
>> released#unset-values
>>
>> They are only available starting with protocol version 4 however.
>>
>> On Thu, Oct 20, 2016 at 10:19 AM, Lijun Huang wrote:
>>
>>> Hi Vladimir,
>>>
>>> Indeed, that's a little weird, I t
imir,
>>
>> Indeed, that's a little weird, I think it is like a empty string: '' but
>> is a timeuuid value. We have many such records that inserted by Astyanax
>> API, when we select it in cqlsh, it is like as below, note the column4 is
>> timeuuid, it
a little weird, I think it is like a empty string: '' but
> is a timeuuid value. We have many such records that inserted by Astyanax
> API, when we select it in cqlsh, it is like as below, note the column4 is
> timeuuid, it is not null or some value, just "empty".
&g
Hi Vladimir,
Indeed, that's a little weird, I think it is like a empty string: '' but is
a timeuuid value. We have many such records that inserted by Astyanax API,
when we select it in cqlsh, it is like as below, note the column4 is
timeuuid, it is not null or some value, jus
Hi,
what does it exactly mean 'empty timeuuid'? UUID takes 16 bytes for storage,
so it should be either null, or some value. Do you mean 'zero' UUID?
Best regards, Vladimir Yudovin,
Winguzone - Hosted Cloud Cassandra
Launch your cluster in minutes.
On Wed,
timeuuid
like below, but now we can only insert null timeuuid by cql command but not
empty one. Is there any cql function to insert an empty timeuuid like by
Astyanax?
And this cause a tough problem is that we can not delete the record by
specifying the primary key, like:
*delete from "Foo" whe
;> I'm interested in convert a timeuuid already generated in a timestamp,
>> similar to dateOf function of the Cassandra, but in Java code. The your
>> sugestion is for generate a timeuuid.
>>
>> 2015-11-15 19:42 GMT-03:00 Dongfeng Lu :
>>
>>> You can use lo
http://www.tutorialspoint.com/java/util/uuid_timestamp.htm
On Mon, Nov 16, 2015 at 7:38 AM, Marlon Patrick
wrote:
> Hi Donfeng,
>
> I'm interested in convert a timeuuid already generated in a timestamp,
> similar to dateOf function of the Cassandra, but in Java code. The your
&
Hi Donfeng,
I'm interested in convert a timeuuid already generated in a timestamp,
similar to dateOf function of the Cassandra, but in Java code. The your
sugestion is for generate a timeuuid.
2015-11-15 19:42 GMT-03:00 Dongfeng Lu :
> You can use long java.util.UUID.timestamp().
&g
You can use long java.util.UUID.timestamp().
On Sunday, November 15, 2015 9:20 AM, Marlon Patrick
wrote:
Hi guys,
Is there any way to convert a timeuuid in timestamp (dateOf) programmatically
using DataStax java driver?
--
Atenciosamente,
Marlon Patrick
Hi guys,
Is there any way to convert a timeuuid in timestamp (dateOf)
programmatically using DataStax java driver?
--
Atenciosamente,
Marlon Patrick
You would get UUID object from cassandra API. Then you may use
uuid.timestamp() to get time stamp for the same
-Vivek
On Tue, Apr 1, 2014 at 9:55 PM, Theo Hultberg wrote:
> no, there's no way. you should generate the TIMEUUID on the client side so
> that you have it.
>
> T#
no, there's no way. you should generate the TIMEUUID on the client side so
that you have it.
T#
On Sat, Mar 29, 2014 at 1:01 AM, Andy Atj2 wrote:
> I'm writing a Java client to a Cassandra db.
>
> One of the main primary keys is a timeuuid.
>
> I plan to do INS
I'm writing a Java client to a Cassandra db.
One of the main primary keys is a timeuuid.
I plan to do INSERTs using now() and have Cassandra generate the value of
the timeuuid.
After the INSERT, I need the Cassandra-generated timeuuid value. Is there
an easy wsay to get it, without having
> Date: Tue, 5 Nov 2013 23:20:37 +0100
> Subject: Re: filter using timeuuid column type
> From: t...@drillster.com
> To: user@cassandra.apache.org
>
> This is because time2 is not part of the primary key. Only the primary
> key column(s
Nov 4, 2013 at 11:29 AM, Turi, Ferenc (GE Power & Water, Non-GE) <
ferenc.t...@ge.com> wrote:
> Hi,
>
>
>
> Is it possible to filter records by using timeuuid column types in case
> the column is not part of the primary key?
>
>
>
> I tried the followings:
&
Hi,
Is it possible to filter records by using timeuuid column types in case the
column is not part of the primary key?
I tried the followings:
[cqlsh 3.1.2 | Cassandra 1.2.10.1 | CQL spec 3.0.0 | Thrift protocol 19.36.0]
CREATE TABLE timeuuid_test2(
row_key text,
time timeuuid,
time2 timeuuid
ok found out the problem..
i was using something like:
select * from log where token(mykey) > token(maxTimeuuid(x)) limit 100;
instead I should just simply use
select * from log where token(mykey) > token(key_from_last_result) limit
100;
the fake timeuuid although represent the tim
use a timeuuid, because the ordering that the
partitioner enforce will not be one that is meaningful (due to the timeuuid
layout).
So can't ues token on a timeuuid key?
On Tue, Oct 1, 2013 at 9:18 AM, Jan Algermissen
wrote:
> Maybe you are hitting the problem that your 'p
with 1.2 for now for a while.
>
> So I am looking for the old fashion way to do the pagination correctly.
>
> I think i follow most of the articles on how to paging through a table, but
> maybe have some silly gap that don't give me the correct behavior or it is
> tim
unfortunately, i have to stick with 1.2 for now for a while.
So I am looking for the old fashion way to do the pagination correctly.
I think i follow most of the articles on how to paging through a table, but
maybe have some silly gap that don't give me the correct behavior or it is
timeuui
e a table like the following:
> >
> > CREATE TABLE log (
> > mykey timeuuid,
> > type text,
> > msg text,
> > primary key(mykey, type)
> > );
> >
> > I want to page through all the results from the table using
>
> Have you considered the
Jimmy,
On 01.10.2013, at 17:26, Jimmy Lin wrote:
> i have a table like the following:
>
> CREATE TABLE log (
> mykey timeuuid,
> type text,
> msg text,
> primary key(mykey, type)
> );
>
> I want to page through all the results from the table using
Have y
i have a table like the following:
CREATE TABLE log (
mykey timeuuid,
type text,
msg text,
primary key(mykey, type)
);
I want to page through all the results from the table using
select * from log where token(mykey) > token(maxTimeuuid(x)) limit 100;
(where xxx is 0 for the first qu
-
> 2013-08-12 02:46:41+0200
>
> Thanks,
> Saravanan
>
> From: Saravanan
> To: "user@cassandra.apache.org"
> Sent: Monday, August 12, 2013 3:13 AM
> Subject: cql throw error when secondary timeuuid field use dateof()
>
>
ow error when secondary timeuuid field use dateof()
Hi,
I am trying to create a comments table. Which has primary key timeuuid and
secondary field which also has timeuuid.
when I do query using funtion dateof() it throws error and i needed to
reconnect again. But that query don't work at
Hi,
I am trying to create a comments table. Which has primary key timeuuid and
secondary field which also has timeuuid.
when I do query using funtion dateof() it throws error and i needed to
reconnect again. But that query don't work at all.
cqlsh:demodb> select id,dateof(search_da
21, 2013 8:38 AM
To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>"
mailto:user@cassandra.apache.org>>
Subject: Re: timeuuid and cql3 query
It's my understanding that if cardinality of the first part of the primary key
has low cardinality, you will struggle wit
27;s recommending is:
>
> CREATE TABLE count3 (
> counter text,
> ts timeuuid,
> key1 text,
> value int,
> PRIMARY KEY (counter, ts)
> )
>
> That way *counter* will be your partitioning key, and all the rows that
> have the same *counter* value will be cluste
Hi,
I believe what he's recommending is:
CREATE TABLE count3 (
counter text,
ts timeuuid,
key1 text,
value int,
PRIMARY KEY (counter, ts)
)
That way counter will be your partitioning key, and all the rows that have the
same counter value will be clustered (stored as a single wid
should support is token(ts) >
token(minTimeuuid('2013-06-17 22:36:16')) and token(ts) <
token(minTimeuuid('2013-06-20 22:44:02')). And that is different because
the token always sort by bytes, and comparing timeuuid by bytes does not
yield a time based ordering.
Long story short,
n order to get it out.
CREATE TABLE count5 (
counter text,
ts timeuuid,
key1 text,
value int,
PRIMARY KEY (counter, ts)
) WITH
bloom_filter_fp_chance=0.01 AND
caching='KEYS_ONLY' AND
comment='' AND
dclocal_read_repair_chance=0.00 AND
gc_grace_se
Here's an example of that not working:
cqlsh:Test> desc table count4;
CREATE TABLE count4 (
ts timeuuid,
counter text,
key1 text,
value int,
PRIMARY KEY (ts, counter)
) WITH
bloom_filter_fp_chance=0.01 AND
caching='KEYS_ONLY' AND
comment='' AND
Tyler,
You're recommending this schema instead, correct?
CREATE TABLE count3 (
counter text,
ts timeuuid,
key1 text,
value int,
PRIMARY KEY (ts, counter)
)
I believe I tried this as well and ran into similar problems but I'll try it
again. I'm using the "ByteOr
to:br...@cvent.com>> wrote:
CREATE TABLE count3 (
counter text,
ts timeuuid,
key1 text,
value int,
PRIMARY KEY ((counter, ts))
)
Instead of doing a composite partition key, remove a set of parens and let ts
be your clustering key. That will cause cql rows to be stored in sorted order
by th
gt; On 19 Jun 2013 16:01, "Tyler Hobbs" wrote:
>
>>
>> On Wed, Jun 19, 2013 at 8:08 AM, Ryan, Brent wrote:
>>
>>>
>>> CREATE TABLE count3 (
>>> counter text,
>>> ts timeuuid,
>>> key1 text,
>>> value int,
Hi Tyler,
I am interested in this scenario as well: could you please elaborate
further your answer?
Thanks a lot,
Davide
On 19 Jun 2013 16:01, "Tyler Hobbs" wrote:
>
> On Wed, Jun 19, 2013 at 8:08 AM, Ryan, Brent wrote:
>
>>
>> CREATE TABLE count3 (
>
On Wed, Jun 19, 2013 at 8:08 AM, Ryan, Brent wrote:
>
> CREATE TABLE count3 (
> counter text,
> ts timeuuid,
> key1 text,
> value int,
> PRIMARY KEY ((counter, ts))
> )
>
Instead of doing a composite partition key, remove a set of parens and let
ts be your
s as
it seems like a bug.
Here's the table:
CREATE TABLE count3 (
counter text,
ts timeuuid,
key1 text,
value int,
PRIMARY KEY ((counter, ts))
)
It has data like so:
cqlsh:Statistics> select counter,dateof(ts),key1,value from count3;
counter | dateof(ts) | key1 | va
ng in the "compareTo" function of my UUID token
> class, but it seems that Cassandra is ignoring it. For example:
>
> Let's suppouse that I have a Users CF where each row represents a user in
> a cluster of 1 node. Rows are ordered by TimeUUID. I create some users in
> t
sandra is ignoring it. For example:
>
> Let's suppouse that I have a Users CF where each row represents a user in a
> cluster of 1 node. Rows are ordered by TimeUUID. I create some users in the
> next order:
>
> user a created with user_id: eac850fa-96f4-11e2-9f22-72ad6af0e
"compareTo" function of my UUID token
class, but it seems that Cassandra is ignoring it. For example:
Let's suppouse that I have a Users CF where each row represents a user in a
cluster of 1 node. Rows are ordered by TimeUUID. I create some users in the
next order:
user a created wi
Ah. TimeUUID. Not as useful for you then but still something for the toolbox.
On Mar 27, 2013, at 8:42 AM, Lanny Ripple wrote:
> A type 4 UUID can be created from two Longs. You could MD5 your strings
> giving you 128 hashed bits and then make UUIDs out of that. Using Scala:
>
&
Partitioner<>
>>
>> Usual disclaimer that ordered partitioners cause problems with load
>> balancing.
>>
>> Hope that helps.
>>
>> -
>> Aaron Morton
>> Freelance Cassandra Consultant
>> New Zealand
>>
>&
; balancing.
>
> Hope that helps.
>
> -
> Aaron Morton
> Freelance Cassandra Consultant
> New Zealand
>
> @aaronmorton
> http://www.thelastpickle.com
>
> On 25/03/2013, at 1:12 AM, Carlos Pérez Miguel wrote:
>
>> Hi,
>>
>>
cause problems with load
> balancing.
>
> Hope that helps.
>
>-
> Aaron Morton
> Freelance Cassandra Consultant
> New Zealand
>
> @aaronmorton
> http://www.thelastpickle.com
>
> On 25/03/2013, at 1:12 AM, Carlos Pérez Miguel
> wrote:
>
> Hi,
>
>
s with load balancing.
Hope that helps.
-
Aaron Morton
Freelance Cassandra Consultant
New Zealand
@aaronmorton
http://www.thelastpickle.com
On 25/03/2013, at 1:12 AM, Carlos Pérez Miguel wrote:
> Hi,
>
> I store in my system rows where the key is a UUID version1, TimeUUID
Hi,
I store in my system rows where the key is a UUID version1, TimeUUID. I
would like to maintain rows ordered by time. I know that in this case, it
is recomended to use an external CF where column names are UUID ordered by
time. But in my use case this is not possible, so I would like to use a
:
In a multi server env, to avoid key collisions
timeuuid may be the better choice.
On Monday, February 27, 2012, Tamar Fraenkel wrote:
Hi!
I have a column family where I use rows as "time
buckets".
What I do is
In a multi server env, to avoid key collisions timeuuid may be the better
choice.
On Monday, February 27, 2012, Tamar Fraenkel wrote:
> Hi!
>
> I have a column family where I use rows as "time buckets".
> What I do is take epoc time in seconds, and round it to 1 hour (
; result of time_since_epoc_second divided by 3600).
> My key validation type is LongType.
> I wonder whether it is better to use TimeUUID or even readable string
> representation for time?
> Thanks,
>
> --
> *Tamar Fraenkel *
> Senior Software Engineer, TOK Media
>
>
>
&
column family where I use rows as "time buckets".
> What I do is take epoc time in seconds, and round it to 1 hour (taking the
> result of time_since_epoc_second divided by 3600).
> My key validation type is LongType.
> I wonder whether it is better to use TimeUUID or even reada
For querying purposes it would be better to use readable strings because
you can really get information out of that.
TimeUUID is just a unique value based on time; but not only the time.
2012/2/28 Tamar Fraenkel
> Hi!
> I have a column family where I use rows as "time buckets"
Hi!
I have a column family where I use rows as "time buckets".
What I do is take epoc time in seconds, and round it to 1 hour (taking the
result of time_since_epoc_second divided by 3600).
My key validation type is LongType.
I wonder whether it is better to use TimeUUID or even reada
On Thu, 2011-11-10 at 22:35 -0800, footh wrote:
>
> UUID startId = new UUID(UUIDGen.createTime(start),
> UUIDGen.getClockSeqAndNode());
> UUID finishId = new UUID(UUIDGen.createTime(finish),
> UUIDGen.getClockSeqAndNode());
You have got comparator_type = TimeUUIDType ?
~mck
--
"The old law
any results.
--
View this message in context:
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/range-slice-with-TimeUUID-column-names-tp6984467p6985963.html
Sent from the cassandra-u...@incubator.apache.org mailing list archive at
Nabble.com.
I am using Hector to do a range query for a column family that uses TimeUUIDs
as column names. However, I'm not sure how to create the "range". I figured
I'd create some UUIDs using the com.eaio.uuid library with timestamps for the
range I was interested in. When trying this, I don't get any
Hi Sameer,
One example is, store all the tweets for a given user in a Column
Family, where row key is user name/user id and column name is of
TimeUUID type that represents tweet arrival time. User would generally
like to see the tweets sorted based on its arrival time. So TimeUUID
will help
Cool, thanks for the Clarification, Kevin.
On Tue, Jun 14, 2011 at 5:43 PM, Kevin wrote:
> Correction. TimeUUID comparisons FIRST compare the time-based portion,
> then go on to the other portion.
>
>
>
On Tue, Jun 14, 2011 at 5:41 PM, Kevin wrote:
> TimeUUIDs should be
Correction. TimeUUID comparisons FIRST compare the time-based portion, then
go on to the other portion.
From: Sameer Farooqui [mailto:cassandral...@gmail.com]
Sent: Tuesday, June 14, 2011 8:16 PM
To: user@cassandra.apache.org
Subject: When does it make sense to use TimeUUID?
I would like
TimeUUIDs should be used for data that is time-based and requires
uniqueness.
TimeUUID comparisons compare the time-based portion of the UUID. So no, you
do not need to know the MAC addresses. In fact, for languages that cannot
get to that low of a level to access a MAC address (like Java
the MAC of the generating
computer in order to do a column slice, right?
When does it make sense to use TimeUUID vs just a time string like
20110130141500 and comparator type UTF8?
- Sameer
You can specify reverse order through the API when you slice the cols so I
don't think you need to write a comparator.
Bill-
On Feb 4, 2011 9:45 PM, "Aditya Narayan" wrote:
Thanks Aaron,
Yes I can put the column names without using the userId in the
timeline row, and when I want to retrieve the
heir due time.)
>>>
>>> *The* solution is write a custom comparator.
>>> Have a look at http://www.datastax.com/docs/0.7/data_model/column_families
>>> and http://www.sodeso.nl/?p=421 for instance.
>>>
>>> As a side note, the fact that the
order would be that much of a problem, since you can always
>> do slice queries in reversed order. But even then, asciiType is not a very
>> satisfying solution as you would have to be careful about the padding of
>> your
>> timestamp for it to work correctly. So again, custom comparator is the way
>> to go.
>>>
>>> Basically I am trying to avoid 16 bytes long timeUUID first because
>>> they are too long and the above defined key pattern is guaranteeing me
>>> a unique key/Id for the reminder row always.
>>>
>>>
>>> Thanks
>>> Aditya Narayan
>>
>> --
>> Sylvain
tion as you would have to be careful about the padding of
> your
> timestamp for it to work correctly. So again, custom comparator is the way
> to go.
>>
>> Basically I am trying to avoid 16 bytes long timeUUID first because
>> they are too long and the above defined key pattern is guaranteeing me
>> a unique key/Id for the reminder row always.
>>
>>
>> Thanks
>> Aditya Narayan
>
> --
> Sylvain
you would have to be careful about the padding of
> your
> timestamp for it to work correctly. So again, custom comparator is the way
> to go.
>>
>> Basically I am trying to avoid 16 bytes long timeUUID first because
>> they are too long and the above defined key pattern is guaranteeing me
>> a unique key/Id for the reminder row always.
>>
>>
>> Thanks
>> Aditya Narayan
>
> --
> Sylvain
o slice queries in reversed order. But even then, asciiType is not a very
satisfying solution as you would have to be careful about the padding of
your
timestamp for it to work correctly. So again, custom comparator is the way
to go.
Basically I am trying to avoid 16 bytes long timeUUID first becau
timeline in the order of their due time.)
Basically I am trying to avoid 16 bytes long timeUUID first because
they are too long and the above defined key pattern is guaranteeing me
a unique key/Id for the reminder row always.
Thanks
Aditya Narayan
The thread here may help:
http://www.mail-archive.com/user@cassandra.apache.org/msg08393.html
On Fri, Jan 7, 2011 at 6:27 PM, Arijit Mukherjee wrote:
> Hi
>
> I'm using the piece of code given in the FAQ
> (http://wiki.apache.org/cassandra/FAQ#working_with_timeuuid_in_java)
> to convert a Date t
Hi
I'm using the piece of code given in the FAQ
(http://wiki.apache.org/cassandra/FAQ#working_with_timeuuid_in_java)
to convert a Date to UUID, and then trying to convert it back (using
the example code given in Hector TimeUUIDUtils - convert the UUID to
long (getTimeFromUUID) and then convert it
Hi Patricio,
Some thoughts inline.
2011/1/6 Patricio Echagüe
> Roshan, the first 64 bits does contain the version. The method
> UUID.timestamp() indeed takes it out before returning. You are right in that
> point. I based my comment on the UUID spec.
>
I know 64 bits have the version, but time
Roshan, the first 64 bits does contain the version. The method
UUID.timestamp() indeed takes it out before returning. You are right in that
point. I based my comment on the UUID spec.
What I am not convinced is that the framework should provide support to
create an almost identical UUID where only
Hi Patricio,
Thanks for your comment. Replying inline.
2011/1/5 Patricio Echagüe
> Roshan, just a comment in your solution. The time returned is not a simple
> long. It also contains some bits indicating the version.
I don't think so. The version bits from the most significant 64 bits of the
>> ===
> >>>
> >>> I have to create the timestamp() equivalent of my time UUIDs so I can
> >>> send it to my UI client, for which it will be simpler to compare "long"
> >>> timestamp tha
t; send it to my UI client, for which it will be simpler to compare "long"
>>> timestamp than comparing UUIDs. Then for the "long" timestamp chosen by the
>>> client, I need to re-create the equivalent time UUID and go and filter the
>>> data from
ss.com/
>> Twitter: @roshandawrani <http://twitter.com/roshandawrani>
>> Skype: roshandawrani
>>
>> On Wed, Jan 5, 2011 at 1:32 AM, Victor Kabdebon <
>> victor.kabde...@gmail.com> wrote:
>>
>>> Hi Roshan,
>>>
>>> Sorry I
lt;http://twitter.com/roshandawrani>
> Skype: roshandawrani
>
> On Wed, Jan 5, 2011 at 1:32 AM, Victor Kabdebon > wrote:
>
>> Hi Roshan,
>>
>> Sorry I misunderstood your problem.It is weird that it doesn't work, it
>> works for me...
>>
ndawrani>
Skype: roshandawrani
On Wed, Jan 5, 2011 at 1:32 AM, Victor Kabdebon
wrote:
> Hi Roshan,
>
> Sorry I misunderstood your problem.It is weird that it doesn't work, it
> works for me...
> As Patricio pointed out use hector "standard" way of creating TimeUUID
In Hector framework, take a look at TimeUUIDUtils.java
You can create a UUID using TimeUUIDUtils.getTimeUUID(long time); or
TimeUUIDUtils.getTimeUUID(ClockResolution clock)
and later on, TimeUUIDUtils.getTimeFromUUID(..) or just UUID.timestamp();
There are some example in TimeUUIDUtilsTest.jav
Hello Victor,
It is actually not that I need the 2 UUIDs to be exactly same - they need to
be same timestamp wise.
So, what I need is to extract the timestamp portion from a time UUID (say,
U1) and then later in the cycle, use the same long timestamp value to
re-create a UUID (say, U2) that is eq
Hi,
I am having a little difficulty converting a time UUID to its timestamp
equivalent and back. Can someone please help?
Here is what I am trying. Is it not the right way to do it?
===
UUID someUUID = TimeUUIDUtils.getUniqueTimeUUID
;>> This silly question is retrieved back with apology. There couldn't be
>>>>> anything easier to handle at the application level.
>>>>>
>>>>> rgds,
>>>>> Roshan
>>>>>
>>>>>
>>>>> On Mon,
2010 at 6:12 AM, Roshan Dawrani >> > wrote:
>>>
>>>> This silly question is retrieved back with apology. There couldn't be
>>>> anything easier to handle at the application level.
>>>>
>>>> rgds,
>>>> Roshan
>>&g
rieved back with apology. There couldn't be
>>> anything easier to handle at the application level.
>>>
>>> rgds,
>>> Roshan
>>>
>>>
>>> On Mon, Dec 27, 2010 at 9:04 AM, Roshan Dawrani >> > wrote:
>>>
>>>
t; On Mon, Dec 27, 2010 at 9:04 AM, Roshan Dawrani
>> wrote:
>>
>>> Hi,
>>> I have the following 2 column families - one being used to store full
>>> rows for an entity and other is an index table for having the TimeUUID
>>> sorted row keys.
>>
x27;t be
> anything easier to handle at the application level.
>
> rgds,
> Roshan
>
>
> On Mon, Dec 27, 2010 at 9:04 AM, Roshan Dawrani
> wrote:
>
>> Hi,
>> I have the following 2 column families - one being used to store full rows
>> for an entity and other
an entity and other is an index table for having the TimeUUID sorted row
> keys.
>
> I am able to query the TimeUUID columns under the super column fine. But
> now I need to go to main CF and get the data and I want the rows in the same
> time order as the keys.
>
> I am using M
====
>> >
>> > And this is the structure of the SCF:
>> > ====
>> > "key1" :
>> > "superCol1":
>> >
(ComparatorType.TIMEUUIDTYPE)
> >
> >
> > And this is the structure of the SCF:
> > ====
> > "key1" :
> > "supe
ype.SUPER)
> cfDef.setSubComparatorType(ComparatorType.TIMEUUIDTYPE)
>
>
> And this is the structure of the SCF:
>
> "key1" :
>
Hi,
I have the following 2 column families - one being used to store full rows
for an entity and other is an index table for having the TimeUUID sorted row
keys.
I am able to query the TimeUUID columns under the super column fine. But now
I need to go to main CF and get the data and I want the
Type.SUPER)
cfDef.setSubComparatorType(ComparatorType.TIMEUUIDTYPE)
And this is the structure of the SCF:
"key1" :
"superCol1":
Roshan, in cassandra.yaml did you define compare_subcolumns_with for the
SCF?
The subcolumn names are the timeuuid, not the subcolumn values, right?
On Sun, Dec 26, 2010 at 9:14 AM, Roshan Dawrani wrote:
> Hi,
>
> I have a super ColumnFamily that has a few super columns, with each h
Hi,
I have a super ColumnFamily that has a few super columns, with each having a
growing list of sub-columns where column name is a TimeUUID, so the
sub-columns get stored chronologically (oldest to newest)
When I retrieve this data, can I somehow retrieve the sub-columns in reverse
order
Hi,
I am experiencing a strange issue when using TimeUUID as columnkeys.
I am storing a number of events with timeUUId as key in a row. Later I try to
query for a slice of that row with a given lower bound timeUUID and
upperBoundTimeUUID (constructed as described in the wiki)
If I inserted the
The sorting of rows is determined by the partitioner (and there is no
support for
TimeUUID sorting of rows).
--
Sylvain
On Mon, Oct 18, 2010 at 6:25 PM, cbert...@libero.it wrote:
> I am getting crazy using TimeUUID in cassandra via Java. I've read the FAQ but
> it didn't help.
&
I am using Pelops for Cassandra 0.6.x
The error that raise isInvalidRequestException(why:UUIDs must be exactly 16
bytes)
For the UUID I am using the UuidHelper class provided.
UUID for the key as a string (or byte array in 0.7) so a badly formatted value will not matter. AaronOn 19 Oct, 2010,at 05:25 AM, "cbert...@libero.it" wrote:I am getting crazy using TimeUUID in cassandra via Java. I've read the FAQ but
it didn't help.
Can I use a TimeUUID as
I am getting crazy using TimeUUID in cassandra via Java. I've read the FAQ but
it didn't help.
Can I use a TimeUUID as ROW identifier? (if converted to string)
I have a CF like this and SCF like these:
TIMEUUID OPECID (ROW) {
phone: 123
address: street xyz
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