Re: Hint file getting stuck

It could also be related to the mutation size of your writes in hint files. Are you seeing any mutation warnings? if yes, temporarily increasing the commitlog segment size would help to solve the problem. Thanks, On Tue, Nov 16, 2021 at 1:29 PM Bowen Song wrote: > I think your problem is likely

Re: Cassandra scale-out with no traffic on newly joined nodes

icies? Thanks in advance? On Tue, Sep 15, 2020 at 12:57 AM Sandeep Nethi wrote: > Thanks Erick. > > We are using datastax java driver ( > https://docs.datastax.com/en/developer/java-driver/). > Driver version number: 3.3.0 > C* version: 3.11.6 > > Regards, > Sandeep &g

Re: Cassandra scale-out with no traffic on newly joined nodes

Thanks Erick. We are using datastax java driver ( https://docs.datastax.com/en/developer/java-driver/). Driver version number: 3.3.0 C* version: 3.11.6 Regards, Sandeep On Sat, Sep 12, 2020 at 2:41 PM Erick Ramirez wrote: > That would be my last option to add a new host as contant point

Re: Cassandra scale-out with no traffic on newly joined nodes

balance these connections without restarting client application, any idea? Thanks, Sandeep On Sat, 12 Sep 2020 at 5:02 AM, ZAIDI, ASAD wrote: > > > > > > > > > > > > > > > > > Can you share please what replica placement strategy ( in keyspace &

Re: Cassandra scale-out with no traffic on newly joined nodes

which > you are giving as contact points > > On Tue, Sep 8, 2020 at 11:27 AM Sandeep Nethi > wrote: > >> Yes, all nodes are UN and no issues identified. Infact i could see some >> client connections on new nodes with telnet but not seeing any traffic. >> >> Ca

Re: Cassandra scale-out with no traffic on newly joined nodes

Yes, all nodes are UN and no issues identified. Infact i could see some client connections on new nodes with telnet but not seeing any traffic. Cassandra version: 3.11.6 Load Balancing policy used is default with no custom policies. Thanks, On Tue, Sep 8, 2020 at 5:52 PM Erick Ramirez wrote: >

Re: Cassandra scale-out with no traffic on newly joined nodes

Thanks Erick. Just to confirm, my application connection string is using host address details and not VIP/some other load balancer in between. So, inorder for my application to successfully establish control connection and be able to read system related tables to learn about topology automaticall

Cassandra scale-out with no traffic on newly joined nodes

ng is, newly joined nodes are not receiving any transaction requests and the number native connections on new nodes is very less compared to existing nodes. Can anybody guess what could be wrong? Thanks in advance! Regards, Sandeep

Re: Downgrading from 3.11.5 to 3.11.0

across any issues with upgraded datacenter, you can switch your traffic to another datacenter which is on older version (later on you can decommission dc with 3.11.5) but this approach needs to be tested. But having two versions in same cluster might have performance impact. Thanks, Sandeep On Thu

Re: Multiple C* instances on same machine

Hi Nitan, You shouldn’t have any issues if you setup things properly. Few possible issues could be (can become a bottleneck) * CPU allocation (Instances can compete) * Disk throughput & IOPS & * Port allocations * Network throughout * Consistency issues. And we have work around for all above,

Re: cassandra node was put down with oom error

I think 3.11.3 has some bug and which can cause OOMs on nodes with full repairs. Just check if there is any correlation with ooms and repair process. Thanks, Sandeep On Wed, 1 May 2019 at 11:02 PM, Mia wrote: > Hi Sandeep. > > I'm not running any manual repair and I think there

Re: cassandra node was put down with oom error

Are you by any chance running the full repair on these nodes? Thanks, Sandeep On Wed, 1 May 2019 at 10:46 PM, Mia wrote: > Hello, Ayub. > > I'm using apache cassandra, not dse edition. So I have never used the dse > search feature. > In my case, all the nodes of the c

Re: Unpair cassandra datacenters

helps, Try to test this scenario on non-prod system first. Thanks, Sandeep On Tue, Apr 23, 2019 at 11:00 AM Kunal wrote: > HI Marc, > > Appreciate your prompt response. > > Yes we are starting datacenter B from scratch. We tried using cluster name > change on side B an

Re: Inconsistent results after restore with Cassandra 3.11.1

Singh wrote: > Can you define "inconsistent" results.. ? What's the topology of the > cluster? What were you expecting and what did you get? > > On Thu, Mar 14, 2019 at 7:09 AM sandeep nethi > wrote: > >> Hello, >> >> Does anyone experi

Inconsistent results after restore with Cassandra 3.11.1

Hello, Does anyone experience inconsistent results after restoring Cassandra 3.11.1 with refresh command? Was there any bug in this version of cassandra?? Thanks in advance. Regards, Sandeep

Alter Keyspace using cqlengine python driver

-driver/api/cassandra/cqlengine/management.html Am I missing something? Please suggest. Thanks, Sandeep

Re: List of List

Thanks Everyone. I am not using thrift. I am reading CQL and understanding to use it. Best Regards, Sandeep Kalra On Tue, Mar 1, 2016 at 9:51 PM, Dani Traphagen wrote: > Hey Sandeep, > > It's good to understand why using Thrift isn't a good idea so I'll help > wi

Re: List of List

I am in very early stage , so, I can change. Infact, the videos you pointed also says to do so... Best Regards, Sandeep Kalra On Tue, Mar 1, 2016 at 3:58 PM, Jack Krupansky wrote: > Thrift? Hah! Sorry, I can't help you if you are going that route. I > recommend CQL - only.

Re: List of List

The way I was planning is to give a restful interface to lookup details of a question, and then user must get complete list of answers and its comments. I am using thrift interface and node-js to serve it. Search on questions are using subject tag and/or its content, Best Regards, Sandeep

Re: List of List

Thanks a lot. I have started with the videos too..I will get back if I see any problem. Best Regards, Sandeep Kalra On Tue, Mar 1, 2016 at 12:36 PM, Jonathan Haddad wrote: > I'd do something like this: > > CREATE TABLE questions ( > question_id timeuuid primary key, &g

Re: List of List

​I do not have limit of number of Answers or its comments.​ Assume it to be clone of StackOverflow.. Best Regards, Sandeep Kalra On Tue, Mar 1, 2016 at 11:29 AM, Jack Krupansky wrote: > Clustering columns are your friends. > > But the first question is how you need to query

List of List

o it in Cassandra*. What can I do as far as re-designing database to have lesser queries. Best Regards, Sandeep Kalra

Fwd: Data Modelling Help

st on how to support the above queries. Maintaining three different tables worries me about the number of insertions (for read/unread) as number of users * emails viewed per day will be huge. Thanks in advance. Best Regards! Keep Walking, ~ Sandeep

Multi datacenter setup question

Hello, My test setup consist of two datacenters DC1 and DC2. DC2 has a offset of 10 as you can see in the following ring command. I have two questions: 1) Let's say in this case I insert a key at DC2 and its token is, let's say 85070591730234615865843651857942052874, in this case will it be

Re: non blocking Cassandra with Tornado

@aaron - thanks a lot. i will test it. This is very much needed. Cheers, Deepu. On Tue, Jul 27, 2010 at 6:03 PM, aaron morton wrote: > Today I worked out how to make non blocking calls to Cassandra inside of > the non blocking Tornado web server (http://www.tornadoweb.org/) using > Python. I t

Re: advice, is cassandra suitable for a multi-tanency vBulletin type application?

ong) is that you loose, > is that you have single points of failure in the system now i.e. redis etc. > > > On Tue, Jul 13, 2010 at 3:33 AM, Sandeep Kalidindi at PaGaLGuY.com < > sandeep.kalidi...@pagalguy.com> wrote: > >> @michael - benjamin answered your question. >

Re: advice, is cassandra suitable for a multi-tanency vBulletin type application?

@michael - benjamin answered your question. Thing is if you use mysql just for indices you are not at all using the benefits of the whole relational database engine(which is fine) but then are inheriting all its disadvantages. You can use mysql for storing indices and then write your own sharding

Re: advice, is cassandra suitable for a multi-tanency vBulletin type application?

ur PVs mostly read or write? As if they are read, I'd think you > wouldn't need a Cassandra like storage which is tuned towards writes. > > Am 12.07.2010 um 23:40 schrieb Sandeep Kalidindi at PaGaLGuY.com: > > > well we were going down constantly with VB running on 3-4 dedic

Re: advice, is cassandra suitable for a multi-tanency vBulletin type application?

ing? > > > On Mon, Jul 12, 2010 at 4:39 PM, Sandeep Kalidindi at PaGaLGuY.com < > sandeep.kalidi...@pagalguy.com> wrote: > >> No we re-coded from scratch with most of the needed functionality. >> >> Cheers, >> Deepu. >> >> >> On Mon

Re: advice, is cassandra suitable for a multi-tanency vBulletin type application?

No we re-coded from scratch with most of the needed functionality. Cheers, Deepu. On Mon, Jul 12, 2010 at 7:49 PM, S Ahmed wrote: > Very interesting! > > What kind of integration do you have between vB and Cassandra? its not a > port then? > > > On Mon, Jul 12, 201

Re: advice, is cassandra suitable for a multi-tanency vBulletin type application?

we were one of the vbulletin customers and our forums has been facing some bad scaling issues. we coded our forum software to work with cassandra. we are still testing for bugs and might go live in couple of weeks. You can ask any specific questions about vbulletin and cassandra and i will answer

Re: New committer: Brandon Williams

Congrats Brandon. have a great time ahead. Cheers, Deepu. On Mon, Jun 28, 2010 at 3:08 AM, Jonathan Ellis wrote: > The Cassandra PMC has voted to make Brandon a committer. Thanks for > your help, Brandon! > > -- > Jonathan Ellis > Project Chair, Apache Cassandra > co-founder of Riptano, the s

RE: Nunit Testing & Cassandra

'. On May 25, 2010, at 10:00 AM, Sandeep mailto:sand...@indatus.com>> wrote: SDSWebService.Service1Test.GetListOfRowKeysFromCF: Expected: equivalent to < , , , > But was: < , , , > Is.EquivalentTo( ICollection ) - tests that two collections are equivalen

RE: Nunit Testing & Cassandra

collection? If so, that would be a problem. On Tue, May 25, 2010 at 8:40 AM, Sandeep mailto:sand...@indatus.com>> wrote: Assert.AreEqual(listOfKeys, Is.EquivalentTo(TestService.GetListOfRowKeysFromCF("ColumnFamilyName","Keyspace1"))); TestService.G

Nunit Testing & Cassandra

Hi all, I am recent grad and working on Cassandra and Nunit testing. I wrote a unit test in C# which goes like this List listOfKeys = new List(); KeySlice item1 = new KeySlice(); KeySlice item2 = new KeySlice(); KeySlice item3 = new KeySlice();

RE: Help with UUID in C#.net

Batch Mutate can only take map>> as parameter but not a GUID. How to solve this problem. From: Sandeep [mailto:sand...@indatus.com] Sent: Tuesday, May 18, 2010 4:03 PM To: user@cassandra.apache.org Subject: RE: Help with UUID in C#.net Hi Roger, Thanks for your reply. Actually I copi

RE: Help with UUID in C#.net

olumn struct because it is of type long. Please help me with this. Thanks, Sandeep. From: Roger Schildmeijer [mailto:schildmei...@gmail.com] Sent: Tuesday, May 18, 2010 3:53 PM To: user@cassandra.apache.org Subject: Re: Help with UUID in C#.net Nick Berardi's blog post about Cassan

Help with UUID in C#.net

tch_mutate() to insert column. How can I insert values to the column family. Thanks, Sandeep.

Re: how does cassandra compare with mongodb?

Any idea about how far the 0.7 release is ?? Cheers, Deepu. On Thu, May 13, 2010 at 10:52 PM, Vijay wrote: > "Cassandra requires the schema to be defined before the database starts, > MongoDB can have any schema at run-time just like a normal database." > > This is changing in 0.7 > > Regards,

Re: cassandra-cli 0.6 displays hashcodes instead of column names

I guess this has been discussed before in the mailing list. @Jean-Christophe Praud - try changing the comparator in your column Family tags from "BytesType" to "UTF8Type" in your storage-conf.yml and then restart the cluster. Let us know if you can see the human readable column values after that

Re: Example of data model

http://blog.evanweaver.com/articles/2009/07/06/up-and-running-with-cassandra/ Above link should help. He explains the data model and then gives an example of building twitter like service on top of cassandra. Cheers, Deepu. On Mon, Mar 22, 2010 at 6:19 PM, Julio Carlos Barrera Juez < juliocar...

Re: Atomic Operations

@juan - for now yes. But as far as i remember, some guys from Digg are trying to implement counters. Don't know how complete it is and when it can be available. But for now such feature is not there. Cheers, Deepu. 2010/3/18 Juan Manuel García del Moral > So I would have to retrieve (client.ge