t;
> De : aaron morton [mailto:aa...@thelastpickle.com]
> Envoyé : vendredi 6 juillet 2012 01:21
> À : user@cassandra.apache.org
> Objet : Re: batch_mutate
>
> Does it mean that the popular use case is when we need to update multiple
> column families using the same key?
> Yes
) ?
Thanks,
Dominique
De : aaron morton [mailto:aa...@thelastpickle.com]
Envoyé : vendredi 6 juillet 2012 01:21
À : user@cassandra.apache.org
Objet : Re: batch_mutate
Does it mean that the popular use case is when we need to update multiple
column families using the same key?
Yes.
Shouldn'
> Dominique
>
>
> De : aaron morton [mailto:aa...@thelastpickle.com]
> Envoyé : vendredi 6 juillet 2012 01:21
> À : user@cassandra.apache.org
> Objet : Re: batch_mutate
>
> Does it mean that the popular use case is when we need to update multiple
> column fam
nks,
Dominique
De : aaron morton [mailto:aa...@thelastpickle.com]
Envoyé : vendredi 6 juillet 2012 01:21
À : user@cassandra.apache.org
Objet : Re: batch_mutate
Does it mean that the popular use case is when we need to update multiple
column families using the same key?
Yes.
Shouldn't we design our
It's a pretty solid standard at this point. The large majority of client
library work from this point on will be based on cql.
On Sun, Sep 23, 2012 at 12:45 AM, Bradford Toney
wrote:
> Yeah i've seen how it's done in CQL3 is just wasn't sure if it was a solid
> standard yet. I will probably go t
Yeah i've seen how it's done in CQL3 is just wasn't sure if it was a solid
standard yet. I will probably go the CQL route as right now i am doing each
insert individually.
On Sat, Sep 22, 2012 at 11:34 AM, Tyler Hobbs wrote:
> If there's not already a well-written client in place, you should str
If there's not already a well-written client in place, you should strongly
consider using cql3 instead. It will save you a ton of work.
If you want to ignore that advice, you can look at the send() and insert()
methods in phpcassa:
https://github.com/thobbs/phpcassa/blob/master/lib/phpcassa/Batch
> Does it mean that the popular use case is when we need to update multiple
> column families using the same key?
Yes.
> Shouldn’t we design our space in such a way that those columns live in the
> same column family?
Design a model where the data for common queries is stored in one row+cf. Yo
I actually found an answer to my first question at
http://wiki.apache.org/cassandra/API. So I got it wrong: actually the outer key
is the key in the table, and the inner key is the table name (this was somewhat
counter-intuitive). Does it mean that the popular use case is when we need to
update
Sure is: scale7-pelops-1.1-0.7.x-20110418.225848-3.jar
Cheers,
--
Dan Washusen
On Tuesday, 19 April 2011 at 3:58 PM, Héctor Izquierdo Seliva wrote:
> Thanks Dan for fixing that! Is the change integrated in the latest maven
> snapshot?
>
> El mar, 19-04-2011 a las 10:48 +1000, Dan Washusen escri
Thanks Dan for fixing that! Is the change integrated in the latest maven
snapshot?
El mar, 19-04-2011 a las 10:48 +1000, Dan Washusen escribió:
> An example scenario (that is now fixed in Pelops):
> 1. Attempt to write a column with a null value
> 2. Cassandra throws a TProtocolException
An example scenario (that is now fixed in Pelops):
Attempt to write a column with a null value
Cassandra throws a TProtocolException which renders the connection useless for
future operations
Pelops returns the corrupt connection to the pool
A second read operation is attempted with the corrupt co
Any idea what's causing the original TPE?
On Mon, Apr 18, 2011 at 6:22 PM, Dan Washusen wrote:
> It turns out that once a TProtocolException is thrown from Cassandra the
> connection is useless for future operations. Pelops was closing connections
> when it detected TimedOutException, TTransportE
It turns out that once a TProtocolException is thrown from Cassandra the
connection is useless for future operations. Pelops was closing connections
when it detected TimedOutException, TTransportException and
UnavailableException but not TProtocolException. We have now changed Pelops to
close c
I've looked over the Pelops code again and I really can't see how it could be
at fault here...
--
Dan Washusen
On Wednesday, 13 April 2011 at 3:20 AM, Stephen McKamey wrote:
> [I wrote this Apr 10, 2011 at 12:09 but my message seems to have gotten lost
> along the way.]
>
> I use Pelops (the
[I wrote this Apr 10, 2011 at 12:09 but my message seems to have gotten lost
along the way.]
I use Pelops (the 1.0-0.7.x build from the Github Maven repo) and have
occasionally seen this message (under load or during GC). I have a test app
running in two separate single-threaded processes doing a
Pelops uses a single connection per operation from a pool that is backed by
Apache Commons Pool (assuming you're using Cassandra 0.7). I'm not saying it's
perfect but it's NOT sharing a connection over multiple threads.
Dan Hendry mentioned that he sees these errors. Is he also using Pelops? Fro
El mié, 06-04-2011 a las 21:04 -0500, Jonathan Ellis escribió:
> "out of sequence response" is thrift's way of saying "I got a response
> for request Y when I expected request X."
>
> my money is on using a single connection from multiple threads. don't do
> that.
>
I'm not using thrift direct
El mié, 06-04-2011 a las 21:04 -0500, Jonathan Ellis escribió:
> "out of sequence response" is thrift's way of saying "I got a response
> for request Y when I expected request X."
>
> my money is on using a single connection from multiple threads. don't do
> that.
I'm not using thrift direc
"out of sequence response" is thrift's way of saying "I got a response
for request Y when I expected request X."
my money is on using a single connection from multiple threads. don't do that.
On Wed, Apr 6, 2011 at 5:59 PM, Dan Washusen wrote:
> Pelops will retry when TimedOutException, TTransp
Pelops will retry when TimedOutException, TTransportException or
UnavailableException exceptions are thrown but not TApplicationException.
TApplicationException has a type property which looks like it could be used to
retry based on specific values. Based on the names the INTERNAL_ERROR and
BAD
El mié, 06-04-2011 a las 09:06 +1000, Dan Washusen escribió:
> Pelops raises a RuntimeException? Can you provide more info please?
>
org.scale7.cassandra.pelops.exceptions.ApplicationException:
batch_mutate failed: out of sequence response
> --
> Dan Washusen
> Make big files fly
> visit digit
Pelops raises a RuntimeException? Can you provide more info please?
--
Dan Washusen
Make big files fly
visit digitalpigeon.com
On Tuesday, 5 April 2011 at 11:43 PM, Héctor Izquierdo Seliva wrote:
El mar, 05-04-2011 a las 09:35 -0400, Dan Hendry escribió:
> > I too have seen the out of sequence r
Step 1: disable swap.
2011/4/5 Héctor Izquierdo Seliva :
> Update with more info:
>
> I'm still running into problems. Now I don't write more than 100 columns
> at a time, and I'm having lots of Stop-the-world gc pauses.
>
> I'm writing into three column families, with memtable_operations = 0.3
>
Update with more info:
I'm still running into problems. Now I don't write more than 100 columns
at a time, and I'm having lots of Stop-the-world gc pauses.
I'm writing into three column families, with memtable_operations = 0.3
and memtable_throughput = 64. There is now swapping, and full GCs are
I'm still running into problems. Now I don't write more than 100 columns
at a time, and I'm having lots of Stop-the-world gc pauses.
I'm writing into three column families, with memtable_operations = 0.3
and memtable_throughput = 64.
Is any of this wrong?
> > -Original Message-
> > From
El mar, 05-04-2011 a las 09:35 -0400, Dan Hendry escribió:
> I too have seen the out of sequence response problem. My solution has just
> been to retry and it seems to work. None of my mutations are THAT large (<
> 200 columns).
>
> The only related information I could find points to a thrift/u
I too have seen the out of sequence response problem. My solution has just been
to retry and it seems to work. None of my mutations are THAT large (< 200
columns).
The only related information I could find points to a thrift/ubuntu bug of some
kind (http://markmail.org/message/xc3tskhhvsf5awz7
Using batch_mutate on a single row will count as 1 write operation, even if
you mutate multiple columns. Using batch_mutate on N rows will count as N
write operations.
- Tyler
On Mon, Nov 29, 2010 at 5:58 PM, Narendra Sharma
wrote:
> Hi,
>
> I am using Cassandra 0.7 beta3 and Hector.
>
> I create
Thanks Gary and Jonathan. Yeah, I'm planning on switching to Hector sometime
soon;
I started with Thrift mostly because I wanted to see what was going on
underneath
the hood before using a higher-level interface. I suppose now is as good a
time to
switch as any.
Thanks,
Chris
On Mon, Oct 25, 2010
You want the set_keyspace method.
What language are you using? We don't recommend using raw Thrift
unless there's no other option.
On Mon, Oct 25, 2010 at 12:59 PM, Chris Oei wrote:
> So, I'm a bit puzzled about how to change my old 0.6 code to 0.7.
> In 0.6, I used:
> client.batch_mutate(key
client.set_keyspace()
On Mon, Oct 25, 2010 at 12:59, Chris Oei wrote:
> So, I'm a bit puzzled about how to change my old 0.6 code to 0.7.
> In 0.6, I used:
> client.batch_mutate(keySpace, mutationMap, ConsistencyLevel.ONE);
> But in 0.7, batch_mutate no longer has a keyspace argument, so I used
QUORUM of ReplicationFactor=1 is 1. All consistency levels should
work fine as long as RF <= node count. If you are seeing it work at
CL.ONE but not at QUORUM then that is probably a bug.
On Tue, Sep 7, 2010 at 7:36 PM, Lucas Nodine wrote:
> Partially Resolved...
>
> Taking your advise (both Jo
Partially Resolved...
Taking your advise (both Jonathan and Aaron's) I was able to track the
problem down. The issue was that running insert (also batch_mutate) and
using a consistencylevel of quorum on a cluster of 1 server with a
replication factor of 1 does not work. Well, that is not accurat
Jonathan,
I have done it successfully with insert, but I have not tried it with
mutate. I'll give that a try tonight.
Thanks
On Tue, Sep 7, 2010 at 2:54 PM, Jonathan Ellis wrote:
> I would try to get a single hard-coded column to insert, before doing
> something more complex.
>
> You can also
Turn up the logging to DEBUG level (in config/log4-server.properties) and check that you are sending what you think you are. AaronOn 08 Sep, 2010,at 02:11 AM, Lucas Nodine wrote:Hello all,
I have posted the following to Stackoverflow, but thought that I would also try the list. If you have any s
I would try to get a single hard-coded column to insert, before doing
something more complex.
You can also enable debug logging on the server and see if that
matches what you want the client to be doing.
On Tue, Sep 7, 2010 at 9:11 AM, Lucas Nodine wrote:
> Hello all,
>
> I have posted the follo
> I am using the familiar meanings from ACID:
>
> atomic means either the entire update will succeed or none of it.
>
> isolated means other threads will not see partial updates while it is
> being applied.
A related concern is whether there is a write *ordering* guarantee for
mutations within a r
The first.
On Sat, Aug 7, 2010 at 10:04 AM, james anderson wrote:
> good afternoon;
>
> On 2010-08-07, at 15:26 , Jonathan Ellis wrote:
>
>> I am using the familiar meanings from ACID:
>>
>> atomic means either the entire update will succeed or none of it.
>>
>> isolated means other threads will
good afternoon;
On 2010-08-07, at 15:26 , Jonathan Ellis wrote:
I am using the familiar meanings from ACID:
atomic means either the entire update will succeed or none of it.
isolated means other threads will not see partial updates while it is
being applied.
yes, those terms are not new.
i
I am using the familiar meanings from ACID:
atomic means either the entire update will succeed or none of it.
isolated means other threads will not see partial updates while it is
being applied.
On Sat, Aug 7, 2010 at 12:50 AM, james anderson wrote:
> good morning;
>
> On 2010-08-07, at 02:45 ,
good morning;
On 2010-08-07, at 02:45 , Jonathan Ellis wrote:
Everything in the same key of a batch_mutate is atomic. (But not
isolated.)
what does the distinction mean in the context of cassandra?
is it that the execution of an operation with the same key could see
the effect of the 'f
Everything in the same key of a batch_mutate is atomic. (But not isolated.)
On Fri, Aug 6, 2010 at 2:15 PM, B. Todd Burruss wrote:
> ok i just saw the FAQ
> (http://wiki.apache.org/cassandra/FAQ#batch_mutate_atomic)
>
> follow up question ...
>
> it states that "As a special case, mutations agai
ok i just saw the FAQ
(http://wiki.apache.org/cassandra/FAQ#batch_mutate_atomic)
follow up question ...
it states that "As a special case, mutations against a single key are
atomic, but more generally no" ... i interpret that to also mean " ..
mutations against a single key in the same CF ... "
This question has been coming up quite regularly now. I've added an
entry to the FAQ. Please feel free to expand an clarify.
http://wiki.apache.org/cassandra/FAQ#batch_mutate_atomic
Gary.
On Mon, Jun 14, 2010 at 06:43, Ran Tavory wrote:
> no, it's not atomic. it just shortens the roundtrip of
no, it's not atomic. it just shortens the roundtrip of many update requests.
Some may fail and some may succeed
On Mon, Jun 14, 2010 at 2:40 PM, Per Olesen wrote:
> Can I expect batch_mutate to work in what I would think of as an atomic
> operation?
>
> That either all the mutations in the batch
Hi sorry for the post I was wrong in understanding key and column family
I was in the thinking cache_pages is the column family and Page is the key
but its the other way right
I will update my code and check it again.
Thanks,
Moses
On Thu, May 27, 2010 at 3:46 PM, Mishail wrote:
> Hi,
>
> Jus
you need to pull out the exception "why" field, which explains what
was invalid about the request
On Thu, May 27, 2010 at 2:45 AM, Moses Dinakaran
wrote:
> Hi,
>
>
>
> I am trying to use batch_mutate() with PHP Thrift. I was getting the
> following error.
>
>
>
>
>
> Fatal error: Uncaught except
Hi,
Just to clarify. Are you trying to insert a couple of columns with key
"cache_pages" in the ColumnFamily "Page"?
Moses Dinakaran wrote:
i,
>
>
>
> I am trying to use batch_mutate() with PHP Thrift. I was getting the
> following error.
>
Hi,
Here is a working example :
$mutation_map = array("$key"=>array("Standard1" => array()));
for($column_name=0; $column_name<$options['numcolumns']; $column_name++)
{
$column = new cassandra_Column(array('name' => "$column_name", 'value'
=> 'put your data here', 'timestamp' =>
Ah, I see. Glad you resolved that. :)
On Thu, Apr 15, 2010 at 12:31 PM, Lee Parker wrote:
> The entire thing was completely my own fault. I was making an invalid
> request and, somewhere in the code, I was catching the exception and not
> handling it at all. So it only appeared to be silent w
The entire thing was completely my own fault. I was making an invalid
request and, somewhere in the code, I was catching the exception and not
handling it at all. So it only appeared to be silent when in reality it was
throwing a nice descriptive exception.
Lee Parker
l...@spredfast.com
[image:
Could you create a ticket for us to return an error message in this
situation?
-Jonathan
On Tue, Apr 13, 2010 at 4:24 PM, Lee Parker wrote:
> nevermind. I figured out what the problem was. I was not putting the
> column inside a ColumnOrSuperColumn container.
>
>
> Lee Parker
> l...@spredfast
nevermind. I figured out what the problem was. I was not putting the
column inside a ColumnOrSuperColumn container.
Lee Parker
l...@spredfast.com
[image: Spredfast]
On Tue, Apr 13, 2010 at 4:19 PM, Lee Parker wrote:
> I upgraded my dev environment to 0.6.0 today in expectation of upgrading
>
54 matches
Mail list logo
