How do u setup networking for Opening Solr Web Interface when on cloud?

Hi, We have DSE cassandra cluster running on AWS. Now we have requirement to enable Solr and Spark on the cluster. We have cassandra on private data subnet which has connectivity to app layer. >From cassandra , we cant open direct Solr Web interface. We tried using SSH tunneling and it is working

Re: How do u setup networking for Opening Solr Web Interface when on cloud?

e, the world’s premiere #ApacheCassandra > conference, and I want to see you there! Use my code Singh50 for 50% off > your registration. www.datastax.com/accelerate > > > On Mon, Apr 1, 2019 at 12:19 PM Krish Donald wrote: > >> Hi, >> >> We have DSE cassandra clu

Cassandra STIG

Hi, Does anyone has Cassandra STIG ? Thanks Krish

Re: Cassandra STIG

Joseph Testa wrote: > There is a recently published CIS benchmark for Cassandra. > > Joe > > > On Tue, Apr 2, 2019 at 4:19 PM Krish Donald wrote: > >> Hi, >> >> Does anyone has Cassandra STIG ? >> >> Thanks >> Krish >> >

Openings in BayArea/Remote for Cassandra Admin

Hi, This community is very helpful. Looking for any pointers. Anyone knows any opening in your team for Cassandra Admin skill in BayArea / Remote? Please send me email . Thanks Krish

Cheat Sheet for Unix based OS, Performance troubleshooting

Any one has Cheat Sheet for Unix based OS, Performance troubleshooting ?

CDC enabled settings and performance impact

Hi, We need to enable CDC in one of the cluster which is on DSE 5.1. We need to change below settings : cdc_enabled cdc_raw_directory cdc_total_space_in_mb cdc_free_space_check_interval_ms What is the value you keep it for below? cdc_total_space_in_mb cdc_free_space_check_interval_ms Is there an

Backups in Cassandra

Hi Folks, First question is , Do you take backup for your cassandra cluster ? If answer is yes then question follows: 1. How do you take backup ? 1.1 ) Is it only snapshot? 1.2 ) We are on AWS with very large cluster around 51 nodes with 1TB data on each node.

Cassandra Repair question

Hi Cassandra experts, We are on Cassandra 3.11.1. We have to run repairs for a big cluster. We have 2 DCs. 3 RACs in each DC. Replication factor is 3 for each datacenter . So if I run repair on all nodes of a single RAC with "pr" option then ideally it will cover all the ranges. Please cor

Re: Cassandra Repair question

; -pr option is to be run on all nodes in a rolling manner. > > Regards > Manish > > On 19 Oct 2019 10:03, "Krish Donald" wrote: > >> Hi Cassandra experts, >> >> >> We are on Cassandra 3.11.1. >> >> We have to run repairs for a big clu

What kind of Automation you have for Cassandra related operations on AWS ?

Hi All, What kind of Automation you have for Cassandra related operations on AWS like restacking, restart of the cluster , changing cassandra.yaml parameters etc ? Thanks

Error while starting Cassandra for the first time

Hi, I am getting below error: Not able to understand why ?? [csduser@master bin]$ ./cassandra -f CompilerOracle: inline org/apache/cassandra/db/AbstractNativeCell.compareTo (Lorg/apache/cassandra/db/composites/Composite;)I CompilerOracle: inline org/apache/cassandra/db/composites/AbstractSimpleCe

Re: Error while starting Cassandra for the first time

ndra not being able to start. You should be able to validate your yaml > file with some online validator such as http://www.yamllint.com/ > > > Regards, > Mark > > On 4 February 2015 at 22:23, Krish Donald wrote: > >> Hi, >> >> I am getting below error:

Case Study for Learning Cassandra

Hi, I am new to Cassandra and have setup 4 nodes Cassandra cluster using VMs. Looking for any case study which I can do to understand the Cassandra Administration and put in my resume as well. Any help is appreciated. Thanks Krish

What is "will be anticompacted on range" ?

Hi, I noticed few messages in system.log like below: INFO [CompactionExecutor:21] 2020-02-08 17:56:16,998 CompactionManager.java:677 - [repair #fb044b01-4ab5-11ea-a736-a367dba4ed71] SSTable BigTableReader(path='xyz/mc-79976-big-Data.db') ((-8828745000913291684,8954981413747359495]) will be antico

Re: What is "will be anticompacted on range" ?

rk the repaired data with a repairedAt timestamp > annotation on the data file / sstable. > > > On Mon, Feb 10, 2020 at 9:39 AM Krish Donald wrote: > >> Hi, >> >> I noticed few messages in system.log like below: >> INFO [CompactionExecutor:21] 2020-02-

Hints replays very slow in one DC

Hi, We have 2 datacenters in our cassandra cluster. Whenever a node goes down in DC1 and hints gets collected in all other nodes then what we have noticed is that hints replay is very very slow in DC1 node but if a node goes down in DC2 and comes back, hints replay fast. We are on 3.11.0 We are u

Re: Hints replays very slow in one DC

DC2 is our main datacenter which serves all the traffic. This cluster has Materialized views. On Tue, Feb 25, 2020 at 9:32 PM Erick Ramirez wrote: > Krish, with the limited info and assuming things like hint throttle and > delivery threads all being equal, my guess would be DC1 is your primary

Re: Hints replays very slow in one DC

Nodes are going down due to Out of Memory and we are using 31GB heap size in DC1 , however in DC2 (Which serves the traffic) has 16GB heap . Why we had to increase heap in DC1 is because , DC1 nodes were going down due Out of Memory issue but DC2 nodes never went down . We also noticed below kind

Re: Hints replays very slow in one DC

Thanks everyone for the response. How to debug more on GC issue ? Is there any GC issue which is present in 3.11.0 ? On Thu, Feb 27, 2020 at 8:46 AM Reid Pinchback wrote: > Our experience with G1GC was that 31gb wasn’t optimal (for us) because > while you have less frequent full GCs they are big

How to know if we need to increase heap size?

Hi, We have a cluster where if reads are increased 2-3 times suddenly then cassandra cpu goes around 100% (We have 48 cpu machines with 128GB RAM) for few nodes and cassandra becomes unresponsive . We are on 3.11.5 and using G1GC with 16GB heap size. When going through the system.logs and gc.log ,

Node is UNREACHABLE after decommission

Hi, We decommissioned a node from the cluster. On decommissioned node it said in system.log that node has been decommissioned . But after couple of minutes only , on rest of the nodes the node is showing UNREACHABLE when we issue nodetool describecluster . nodetool status is not showing the node

Re: Node is UNREACHABLE after decommission

We are on 3.11.5 opensource cassandra On Thu, Sep 17, 2020 at 10:25 AM Krish Donald wrote: > Hi, > > We decommissioned a node from the cluster. > On decommissioned node it said in system.log that node has been > decommissioned . > But after couple of minutes only , on rest of

Re: Node is UNREACHABLE after decommission

's why it no > longer shows up on describecluster, but this shouldn't be necessary. You > should check that the node successfully decommissioned if it doesn't show > up on "nodetool status". > > Em qui., 17 de set. de 2020 às 14:26, Krish Donald > escreveu: