ied restarting the clients, also no luck. Checked nodetool
>>> status and ownership is even across the cluster.
>>>
>>> Curious if anyone's seen this behavior before. Seems like the next step
>>> will be to debug the client and see why it's choosing that node.
>>>
>>> [image: Inline image 1]
>>>
>>>
>>> --
>>> AB
>>>
>>
>
>
> --
> AB
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
the latest cassandra driver but when used I get an error
> about class io.netty.util.timer (netty-3.9.0.Final) not being found during
> runtime. If I get the latest netty-alll-4.0.46.Final.jar during runtime I
> get an exception about not having a java.security.cert.x509Certificat
nfortunate but sometimes
the only way we can push things forward.
I do agree with your assessment 1000% that if starting now, the best
version to go with is the latest on the 3.0 branch.
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
<http://cassandrasummit.or
stable (production ready) for
> Cassandra 2.1?
>
> Thanks
> Anuj
>
>
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
<http://cassandrasummit.org/Email_Signature>
» DataStax Enterprise - the database for cloud applications. «
t said to "please report" so I guess I am. If what I have
> provided is enough information to actually file a bug report, please let me
> know and I will. Otherwise, what additional information can I collect for
> this?
>
> Thanks,
> Thunder
>
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
o no
> avail.
>
> Does anyone know what this is about and how I can solve this?
>
> Running Cassandra 2.2.4, Datastax driver 3.0.0.
>
> Regards,
> Emils
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
can then construct a DataSet myself.
>
> Thanks & regards
> Arko
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
ore). Just to give you a quick example, if using DevCenter to
make schema changes it will offer the options of saving the final
definition or just the set of changes applied (to an existing CQL file or a
new one).
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
On Tue, Feb 2, 2016 at 8:12 AM, Richard L. Burton III
wrote:
> is this behavior only related to the Java Drivers?
All DataStax drivers for Cassandra provide the node discovery feature and
are aware of the cluster topology.
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
wrong
> path? I am using the DataStax 2.0.2 driver, with Cassandra 2.0.8.
>
>
>
> Should I be using instead of ?
>
>
>
> Does anybody have a working example they can share? Any help to get me
> going would be appreciated. Thanks.
>
>
>
> Bill
>
>
>
>
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
27;ve never jumped to answer any of them as I confess not knowing the
purpose of your research/report makes me caution (e.g. are you doing this
for your current employer evaluating the future use of the product? are you
doing this for an analyst company? are you planning to sell this report?
etc. etc)
ation factor=2
> Spark 1.5.1
> Cassandra Java Driver 2.2.0-rc3
> Spark Cassandra Java Connector 2.10-1.5.0-M2
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
tastax-oss.atlassian.net/browse/JAVA-664> has been open for
>>> quite a while now and aims to fix the problem you describe. It will
>>> hopefully make it into 2.1.8 as well, although I cannot guarantee that at
>>> this point.
>>>
>>> Thanks,
>
calling
> CreateClusterConfController: Unable to connect to cluster. Error is: Unable
> to connect to any
> seed nodes, tried [u'172.20.30.91']
>
>
> How can we switch to protocol_version to 4?
> Does OpsCenter officially support the latest version of Cassandra?
> Did anybody try to setup it?
>
> Please advice. Thank you!
>
> --
>
> Sergey Panov
>
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
jor versions isn't supported, which is why we recommend that
> you take a snapshot before upgrading. Your only real option for
> downgrading without data loss is to dump your data (using cqlsh's COPY TO
> or something similar) and then re-load it on 2.2 (using cqlsh's COPY FROM
> or something similar).
>
>
> --
> Tyler Hobbs
> DataStax <http://datastax.com/>
>
>
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
that this EMail has been swept for computer viruses by
>>> Symantec.Cloud, but please re-sweep any attachments before opening or
>>> saving. http://www.gov.uk/PHE
>>>
>>> **
>>>
>>
>>
>> **
>> The information contained in the EMail and any attachments is
>> confidential and intended solely and for the attention and use of the named
>> addressee(s). It may not be disclosed to any other person without the
>> express authority of Public Health England, or the intended recipient, or
>> both. If you are not the intended recipient, you must not disclose, copy,
>> distribute or retain this message or any part of it. This footnote also
>> confirms that this EMail has been swept for computer viruses by
>> Symantec.Cloud, but please re-sweep any attachments before opening or
>> saving. http://www.gov.uk/PHE
>> **
>>
>
>
> **
> The information contained in the EMail and any attachments is confidential
> and intended solely and for the attention and use of the named
> addressee(s). It may not be disclosed to any other person without the
> express authority of Public Health England, or the intended recipient, or
> both. If you are not the intended recipient, you must not disclose, copy,
> distribute or retain this message or any part of it. This footnote also
> confirms that this EMail has been swept for computer viruses by
> Symantec.Cloud, but please re-sweep any attachments before opening or
> saving. http://www.gov.uk/PHE
> **
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
anager.initAsync(SessionManager.java:75)
> at
> com.datastax.driver.core.SessionManager.init(SessionManager.java:67)
> at
> com.datastax.driver.mapping.MappingManager.getProtocolVersion(MappingManager.java:65)
> at
> com.datastax.driver.mapping.MappingManager.(MappingManager.java:56)
>
> Could you please say what does it mean?
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
duce the memory
> usage
>
> thanks a lot
>
> --
> --
> Joseph Gao
> PhoneNum:15210513582
> QQ: 409343351
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
<http://cassandrasummit-datastax.com/?utm_campaign=summit15&utm_medium=summiticon&utm_source=emailsignature>
el.DefaultChannelPipeline.fireChannelRead(
> *DefaultChannelPipeline.java:846*)
>
>at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(
> *AbstractNioByteChannel.java:131*)
>
>at io.netty.channel.nio.NioEventLoop.processSelectedKey(
> *NioEventLoop.java:511*
nts
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
/eclipse-luna-crashes-on-new-project-in-ubuntu
which mentions a workaround.
3. Last but definitely the most important, I'd strongly encourage you to
upgrade to the latest version of DevCenter 1.3.1
http://www.datastax.com/download-ops-dev#DataStax_DevCenter
--
Bests,
Alex Popescu | @
up-to-date, feature rich, and
tunable C# driver for Apache Cassandra and DataStax Enterprise.
Anyways, if there's anything missing we are always happy to improve it.
(as you can see from my sig, I do work for DataStax, but the above is very
true)
--
Bests,
Alex Popescu | @al3xandru
S
documentation for the async API is very sparse and there's no mention on
> how to plug this into Twisted event-loop.
>
> Does anyone have a small working example on how to use both of these?
>
> Thanks!
>
> Jonathan
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
he compilation is never completed and I have the error
> file/directory cassandra.h not found. Any idea how to fix this knowing that
> I have the Datastax Cassandra cpp-driver installed??
>
> In advance, thank you for your response,
> Sara
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
so dump, but I will really appreciate an
> answer.
> PS 2: I'm intern and i'm completely new to cassandra so...
>
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
some good suggestions
here.
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
.237:9042]
>> Cannot connect*
>>
>>
>>
>>
>>
>> Does anyone have any experience with connecting to AWS clusters from dev
>> machines? How have you set up your aliases to get around this issue?
>>
>>
>>
>> Current setup in sales3 (seed node) cassandra.yaml:
>>
>>
>>
>> *- seeds: "sales3"*
>>
>> *listen_address: sales3*
>>
>> *rpc_address: sales3*
>>
>>
>>
>> Current setup in other nodes (eg sales2) cassandra.yaml:
>>
>>
>>
>> *- seeds: "sales3"*
>>
>> *listen_address: sales2*
>>
>> *rpc_address: sales2*
>>
>>
>>
>>
>>
>> Thanks!
>>
>> Matt
>>
>>
>>
>
--
Bests,
Alex Popescu | @al3xandru
Sen. Product Manager @ DataStax
#x27;t support skipping so this is not really a limitation of
the driver.
--
[:>-a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
ror.
>
> If I remove "IF NOT EXISTS" from cql, insert passed.
>
> Please advice. thx.
>
> best regards
> Tom
>
--
[:>-a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
ertEquals(4, priceType.getFieldNames().size()); //
> AssertionFailedError: expected:<4> but was:<0>
>
>
>
> I am testing with Cassandra v.2.1.2 on Windows using Datastax Java Driver
> 2.1.2.
>
>
>
> I am thankful for any suggestions.
>
>
>
> Regards
>
> Andi
>
--
[:>-a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
Works ok (rund in devcenter and cqlsh) but dev centre flags the missing
> values with an error. Minor, but may throw people a curve.
>
> Andy
>
>
>
> The University of Dundee is a registered Scottish Charity, No: SC015096
>
--
[:>-a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
t;
> How can I increase the number of threads that the driver uses to query
> Cassandra?
>
>
>
--
[:>-a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
ng * Alerting * Anomaly Detection * Centralized Log Management
> Solr & Elasticsearch Support * http://sematext.com/
>
>
--
[:>-a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
to avoid having to rewrite all my tools at once, so if I could support
> it from CQL that would be great.
>
> Regards,
> \EF
>
You'll have better chances to get an answer about the Python driver on its
own mailing list
https://groups.google.com/a/lists.datastax.com/forum/#!forum/p
support in descanter ?
>
> Andy
>
>
> The University of Dundee is a registered Scottish Charity, No: SC015096
>
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
itself?
>
> Looking at the docs and the current Java driver it doesn't seem that way.
>
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
//goo.gl/k4eM39 (CHANGES.txt)
> [2]: http://goo.gl/npCsro (NEWS.txt)
> [3]: http://wiki.apache.org/cassandra/DebianPackaging
> [4]: http://goo.gl/MjohJp
> [5]: http://goo.gl/f8jSme
> [6]: http://goo.gl/6TJPH6
> [7]: http://goo.gl/YT7znJ
> [8]: http://goo.gl/Rg3tdA
> [9]: http://goo.gl/JfDBGW
> [10]: http://goo.gl/kQl7GW
> [11]: http://goo.gl/OTNqiQ
>
>
>
>
>
>
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
h better results than a generic interface. This would make things a lot
more complicated on C* side
and could potentially expose your data to security risks.
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
ocal/lib/python2.7/site-packages/cassandra/cluster.py",
> line 2300, in result
> raise self._final_exception
> cassandra.ReadTimeout: code=1200 [Timeout during read request]
> message="Operation timed out - received only 1 responses."
> info={'re
; * each DC: 7 nodes
> * RF=5
> * Leveled compaction
>
> After cassandra restart on all nodes, the latencies are alright again
> (average < 5ms, max 50ms).
>
> Any thoughts are greatly appreciated.
>
> Thanks,
> Alexey
>
>
>
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
otocol.readAll(TBinaryProtocol.java:362)
>>> > at
>>> org.apache.thrift.protocol.TBinaryProtocol.readI32(TBinaryProtocol.java:284)
>>> > at
>>> org.apache.thrift.protocol.TBinaryProtocol.readMessageBegin(TBinaryProtocol.java:191)
>>> > at
>>> org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:69)
>>> >
>>> > Any pointer/suggestions?
>>> >
>>> > -Vivek
>>>
>>>
>>
>>
>
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
gt; [cqlsh 4.1.1 | Cassandra 2.0.6 | CQL spec 3.1.1 | Thrift protocol
> 19.39.0]
> Use HELP for help.
>
> What can I do to make DevCenter understand it should be connecting using
> 3.1.1?
>
> ---
> Philip
> g...@gpcentre.net
> http://www.gpcentre.net/
>
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
On Thu, Mar 27, 2014 at 2:23 AM, user 01 wrote:
> Btw both Hector & Datastax java driver are maintained by Datastax, & both
> for java, this speaks for itself !
Hector is not maintained by DataStax.
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
n()
>>>
>>> Exception:
>>>
>>> Exception in thread event_loop (most likely raised during interpreter
>>> shutdown):
>>> Traceback (most recent call last):
>>> File "/usr/local/lib/python2.7/threading.py", line 810, in
>>> __bootstrap_inner
>>> File "/usr/local/lib/python2.7/threading.py", line 763, in run
>>> File
>>> "/usr/local/lib/python2.7/site-packages/cassandra/io/asyncorereactor.py",
>>> line 52, in _run_loop
>>> : __exit__
>>>
>>>
>>> Can someone help me fixing this error?
>>>
>>> Regards,
>>> Sundeep
>>>
>>
>>
>
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
hen a request comes into my
> multi-threaded application server, I should create a new Session (or find a
> way to pool Sessions), but should I be creating a new cluster first? What
> about a builder?
>
>
>
> John “lost in the abyss”
>
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
On Thu, Feb 6, 2014 at 3:50 PM, Clint Kelly wrote:
> I can
> post a link if anyone is curious (once it is done).
>
I'm curious... thanks
--
:- a)
@al3xandru
compressed data
> if I am not wrong.. And then I will iterate this Map to snappy decompress
> the data..
>
> I am using Datastax Java client working with Cassandra 1.2.9.
>
> Any thoughts what wrong I am doing here?
>
> To unsubscribe from this group and stop receiving emails from it, send an
> email to java-driver-user+unsubscr...@lists.datastax.com.
>
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
netcassandra/cassandra-at-disqus (relevant
slides start at 25)
--
:- a)
Alex Popescu
@al3xandru
e for the below query.. Somehow somebody by mistake is trying to
>>> execute the below query then it will create another row with employee_id as
>>> 1 and with other fields? I don't want anyone to insert the same employee_id
>>> again if it is already there in the cassandra database.. Any thoughts?
>>>
>>> insert into test_new (employee_id, employee_name, value,
>>> last_modified_date) values ('1', 'e29', 'some_new_value', now());
>>>
>>>
>>> To unsubscribe from this group and stop receiving emails from it, send
>> an email to java-driver-user+unsubscr...@lists.datastax.com.
>>
>
> To unsubscribe from this group and stop receiving emails from it, send an
> email to java-driver-user+unsubscr...@lists.datastax.com.
>
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
nonetheless. If you
>> use a prepared statement for instance (where you send values already
>> serialized), nothing will prevent you from sending an empty value. Even if
>> you don't want to use a prepared statement, CQL3 has conversion functions (
>> http://cassandra.apache.org/doc/cql3/CQL.html#blobFun) that allows to do
>> it (for instance, "blobAsInt(0x)" will be an empty int value).
>>
>> --
>> Sylvain
>>
>>
>>
>> On Tue, Sep 24, 2013 at 2:36 PM, Hiller, Dean > <mailto:dean.hil...@nrel.gov>> wrote:
>> Many applications in thrift use the wide row with composite column name
>> and as an example, let's say golf score for instance and we end up with
>> golf score : pk like so
>>
>> null : pk56
>> null : pk45
>> 89 : pk90
>> 89: pk87
>> 90: pk101
>> 95: pk17
>>
>> Notice that there are some who do not have a golf score(zero would not
>> quite make sense and would be interpreted as a golf score). I am hearing
>> from this post if they are correct that this is not portable to CQL3??? Is
>> this true?
>> http://stackoverflow.com/questions/18963248/how-can-i-have-null-column-value-for-a-composite-key-column-in-cql3
>>
>> (This sounds like a major deficit to me as the wide row now can only be
>> used where actual values exist?). Is it possible to port this pattern
>> to CQL3?
>>
>> Thanks,
>> Dean
>>
>>
>>
>>
>>
>>
>>
>>
>
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
to the OP batching inserts is slow. The SO thread [1] mentions
that the in their environment BATCH takes 1.5min, while the Thrift-based
approach is around 235millis.
[1]
http://stackoverflow.com/questions/18522191/using-cassandra-and-cql3-how-do-you-insert-an-entire-wide-row-in-a-single-re
n/developer/java-driver/1.0/webhelp/index.html#java-driver/quick_start/qsSimpleClientBoundStatements_t.html
>
>
>
I think PreparedStatements should almost always be the recommended way (no
stringification, performance, etc.). Except maybe statements that you are
sure they'll be run only once,
:- a)
Alex Popescu
@al3xandru
mp; Mac
> versions? My impression has been that most users run Cassandra on Linux.
> Is a Linux version coming (please!)?
>
>
> On 08/09/2013 01:27 PM, Alex Popescu wrote:
>
>
> On Fri, Aug 9, 2013 at 10:12 AM, David McNelis wrote:
>
>> Is DevCenter a project that mi
ven't figured this part yet. DevCenter is still in its infancy and
we'll be experimenting with different approaches/technologies to allow us
to build the features we imagined for it. Having the code in the open right
now doesn't make too much sense.
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
not the intended recipient,
> you are hereby notified that any dissemination, distribution or copying of
> this communication is strictly prohibited. If you have received this
> communication in error, please immediately notify the sender and destroy
> the original message.
>
:
>
> Hi All,
>
> Is there a GUI tool for managing data in Cassandra database? I have google
> and seen tools but they seem to be schema management or explorer to just
> view data. IT would be great to delete/inset rows or update values for a
> column via GUI.
>
> Thanks,
> -Tony
>
>
>
>
>
>
>
>
>
--
:- a)
Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru
Algermissen wrote:
>
>>
>> On 06.08.2013, at 11:36, Andy Twigg wrote:
>>
>> > Store pointers to counters as map values?
>>
>> Sorry, but this fits into nothing I know about C* so far - can you
>> explain?
>>
>> Jan
>>
>>
>
> *Electrical and Computer Engineering*
> *Purdue University*
>
> --
> View this message in context: Re: Are Writes disk-bound rather than
> CPU-bound?<http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Are-Writes-disk-bound-rather-than-CPU-bound-tp7589191p7589248.html>
>
> Sent from the cassandra-u...@incubator.apache.org mailing list
> archive<http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/>at
> Nabble.com.
>
--
:- a)
Alex Popescu
@al3xandru
58 matches
Mail list logo
