Re: cassandra python driver routing requests to one node?

he quiet >>> periods). Tried 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

Re: Lattest driver and netty issues...

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.x509Certificate > class. > > So what to do? > > Thanks! > > > > > -- Bests, Alex Popescu | @al3xandru Sen. Product Manager @ DataStax <http://cassandrasummit.org/Email_Signature> » DataStax Enterprise - the database for cloud applications. «

Re: Production Ready/Stable DataStax Java Driver

reaking changes. That's unfortunate 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://c

Re: Production Ready/Stable DataStax Java Driver

Driver release is most 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. «

Re: com.datastax.driver.core.Connection "This should not happen and is likely a bug, please report."

d 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

Re: Exception about too long clustering key

e schema def to 1-3 letters, to 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

Re: DataStax .NET Driver - Converting from Row to DataRow

hen construct a DataSet myself. > > Thanks & regards > Arko > -- Bests, Alex Popescu | @al3xandru Sen. Product Manager @ DataStax

Re: Schema Versioning

future versions will add more). 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

Re: Java Driver Question

On Tue, Feb 2, 2016 at 8:12 AM, Richard L. Burton III <mrbur...@gmail.com> 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 | @al3x

Re: Session timeout

but I'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

Re: Cassandra driver class

or am I going down the 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

Re: Spark Cassandra Java Connector: records missing despite consistency=ALL

configuration with replication 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

Re: memory usage problem of Metadata.tokenMap.tokenToHost

.8 version. >>> >>> On a side note, JAVA-664 >>> <https://datastax-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, a

Re: OpsCenter doen not work with Cassandra 3.0

eClusterConfController: 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?

Re: Cassandra 3.0.0 connection problem

ata 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

Re: Getting code=2200 [Invalid query] message=Invalid column name ... while executing ALTER statement

;> 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

Re: cassandra 3.0 rc1 and datastax java driver 3.0.0 alpha3

e.SessionManager.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

Re: memory usage problem of Metadata.tokenMap.tokenToHost

ld extremely reduce 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_medium=summiticon_source=emailsignature>

Re: date type and SimpleDateSerializer for Cassandra-2.2.0

*) at io.netty.channel.nio.NioEventLoop.processSelectedKeys( *NioEventLoop.java:382*) at io.netty.channel.nio.NioEventLoop.run(*NioEventLoop.java:354*) ... 2 more What Am I doing wrong? Thank you for your help. Regards Philippe SURAY -- Bests, Alex Popescu | @al3xandru Sen

Re: Any use-case about a migration from SQL Server to Cassandra?

. It is the most 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 Sen

Re: DevCenter 1.2.0 keep failing in KDE 4.14.1

/26436009/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

Re: [MASSMAIL]Re: DevCenter 1.2.0 keep failing in KDE 4.14.1

-statements -- Bests, Alex Popescu | @al3xandru Sen. Product Manager @ DataStax

Re: Using Cassandra and Twisted (Python)

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

Re: no file cassandra.h found

cassandra.h . the 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

Re: cassandra installation

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

Re: Creating 'Put' requests

. -- Bests, Alex Popescu | @al3xandru Sen. Product Manager @ DataStax

Re: Connecting to Cassandra cluster in AWS from local network

-- Bests, Alex Popescu | @al3xandru Sen. Product Manager @ DataStax

Re: Pagination support on Java Driver Query API

doesn't support skipping so this is not really a limitation of the driver. -- [:-a) Alex Popescu Sen. Product Manager @ DataStax @al3xandru

Re: about insert into table with IF NOT EXISTS error

, insert passed. Please advice. thx. best regards Tom -- [:-a) Alex Popescu Sen. Product Manager @ DataStax @al3xandru

Re: Problems with user defined types (cql) and Datastax Java Driver

. Regards Andi -- [:-a) Alex Popescu Sen. Product Manager @ DataStax @al3xandru

Re: UDF and DevCenter

. Andy The University of Dundee is a registered Scottish Charity, No: SC015096 -- [:-a) Alex Popescu Sen. Product Manager @ DataStax @al3xandru

Re: Datastax Cassandra Java Driver executeAsynch question.

that the driver uses to query Cassandra? -- [:-a) Alex Popescu Sen. Product Manager @ DataStax @al3xandru

Re: Programmatic Cassandra version detection/extraction

/ -- [:-a) Alex Popescu Sen. Product Manager @ DataStax @al3xandru

Re: Working with legacy data via CQL

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/python-driver-user -- [:-a) Alex Popescu Sen. Product Manager @ DataStax

Re: DevCenter and Cassandra 2.1

in descanter ? Andy The University of Dundee is a registered Scottish Charity, No: SC015096 -- :- a) Alex Popescu Sen. Product Manager @ DataStax @al3xandru

Re: Named Parameters in Prepared Statement

. -- :- a) Alex Popescu Sen. Product Manager @ DataStax @al3xandru

Re: [RELEASE] Apache Cassandra 2.1.0

/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

Re: Cassandra connectors

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

Re: python cql driver - cassandra.ReadTimeout - “Operation timed out - received only 1 responses.”

are running in a two node cluster, with RF = 2, write and read consistency = ALL (but same results using QUORUM). Thanks in advance. Best regards, Marcelo. -- :- a) Alex Popescu Sen. Product Manager @ DataStax @al3xandru

Re: Increased Cassandra connection latency

). Any thoughts are greatly appreciated. Thanks, Alexey -- :- a) Alex Popescu Sen. Product Manager @ DataStax @al3xandru

Re: : Read a negative frame size (-2113929216)!

) Any pointer/suggestions? -Vivek -- :- a) Alex Popescu Sen. Product Manager @ DataStax @al3xandru

Re: Which hector version is suitable for cassandra 2.0.6 ?

On Thu, Mar 27, 2014 at 2:23 AM, user 01 user...@gmail.com 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

Re: Exception in thread event_loop

/lib/python2.7/site-packages/cassandra/io/asyncorereactor.py, line 52, in _run_loop type 'exceptions.AttributeError': __exit__ Can someone help me fixing this error? Regards, Sundeep -- :- a) Alex Popescu Sen. Product Manager @ DataStax @al3xandru

Re: Driver documentation questions

(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

Re: Cassandra 2.0 with Hadoop 2.x?

On Thu, Feb 6, 2014 at 3:50 PM, Clint Kelly clint.ke...@gmail.com wrote: I can post a link if anyone is curious (once it is done). I'm curious... thanks -- :- a) @al3xandru

Re: How to retrieve snappy compressed data from Cassandra using Datastax?

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

Re: Counters question - is there a better way to count

/planetcassandra/cassandra-at-disqus (relevant slides start at 25) -- :- a) Alex Popescu @al3xandru

Re: CQL Tables in Cassandra with an Index

-user+unsubscr...@lists.datastax.com. -- :- a) Alex Popescu Sen. Product Manager @ DataStax @al3xandru

Re: is this correct, thrift unportable to CQL3Š.

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

Re: CQL Thrift

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-reque -- :- a) Alex Popescu Sen. Product Manager

Re: CQL: Prepared statements

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

Re: Any good GUI based tool to manage data in Casandra?

of this communication is strictly prohibited. If you have received this communication in error, please immediately notify the sender and destroy the original message. ** ** *From:* Alex Popescu [mailto:al...@datastax.com] *Sent:* Friday, August 09, 2013 12:47 AM *To:* user@cassandra.apache.org

Re: Any good GUI based tool to manage data in Casandra?

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

Re: Any good GUI based tool to manage data in Casandra?

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 dmcne...@gmail.com wrote: Is DevCenter a project that might end up open sourced? The original blog

Re: Any good GUI based tool to manage data in Casandra?

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

Re: Is there update-in-place on maps?

-- :- a) Alex Popescu Sen. Product Manager @ DataStax @al3xandru

Re: Are Writes disk-bound rather than CPU-bound?

...@incubator.apache.org mailing list archivehttp://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/at Nabble.com. -- :- a) Alex Popescu @al3xandru