Re: nodetool suddenly failing with "Access denied!"

the affected ones. it would cost some time and money but better than having a node tool not working Best, Sergio Il giorno dom 26 feb 2023 alle ore 10:51 Abe Ratnofsky ha scritto: > Hey Mitch, > > The security upgrade schedule that your colleague is working on may well > be relevant. Is

Re: Send large blobs

However, if I were you I would avoid that... Maybe I will place a url to S3 or GFS in Cassandra Best, Sergio On Tue, May 31, 2022, 4:10 PM Sergio wrote: > You have to split it by yourself > Best, > Sergio > > On Tue, May 31, 2022, 3:56 PM Andria Trigeorgis > wrote: >

Re: Send large blobs

You have to split it by yourself Best, Sergio On Tue, May 31, 2022, 3:56 PM Andria Trigeorgis wrote: > Thank you for your prompt reply! > So, I have to split the blob into chunks by myself, or there is any > fragmentation mechanism in Cassandra? > > > On 31 May 2022, at 4:44 P

Re: Running Large Clusters in Production

Sorry for the dumb question: When we refer to 1000 nodes divided in 10 clusters(shards): we would have 100 nodes per cluster A shard is not intended as Datacenter but it would be a cluster itself that it doesn't talk with the other ones so there should be some routing logic at the application

Re: Nodetool clearsnapshot does not delete snapshot for dropped column_family

The problem is that folder is not under snapshot but it is under the data path. I tried with the --all switch too Thanks, Sergio On Thu, Apr 30, 2020, 4:21 PM Nitan Kainth wrote: > I don't think it works like that. clearsnapshot --all would remove all > snapshots. Here is an example: &g

Nodetool clearsnapshot does not delete snapshot for dropped column_family

that removes the column_family folder for each node. I tried the nodetool clearsnapshot command but it didn't work and when I try to nodetool listsnapshots I don't see anything. It is like hidden that space occupied. Any suggestion? Thanks, Sergio

Re: New seed node in the cluster immediately UN without passing for UJ state

Hi Erick! Just follow up to your statement: Limiting the seeds to 2 per DC means : A) Each node in a DC has at least 2 seeds and those seeds belong to the same DC or B) Each node in a DC has at least 2 seeds even across different DC Thanks, Sergio Il giorno gio 13 feb 2020 alle ore 19:46

Re: IN OPERATOR VS BATCH QUERY

do you use batch then? Best, Sergio On Thu, Feb 20, 2020, 6:18 PM Erick Ramirez wrote: > Batches aren't really meant for optimisation in the same way as RDBMS. If > anything, it will just put pressure on the coordinator having to fire off > multiple requests to lots of replicas. The IN

IN OPERATOR VS BATCH QUERY

in the IN STATEMENT OR HANDLE WITH A CASSANDRA BATCH QUERY and in particular, I was looking at https://docs.spring.io/spring-data/cassandra/docs/current/api/org/springframework/data/cassandra/core/ReactiveCassandraBatchOperations.html#delete-java.lang.Iterable- Thanks, Sergio

Re: AWS I3.XLARGE retiring instances advices

I really like these conversations. So feel free to continue this one or create a new one Thanks to everyone participating :) Il giorno dom 16 feb 2020 alle ore 14:04 Reid Pinchback < rpinchb...@tripadvisor.com> ha scritto: > No actually in this case I didn’t really have an opinion because C* is

Re: AWS I3.XLARGE retiring instances advices

Thank you for the advices! Best! Sergio On Thu, Feb 13, 2020, 7:44 PM Erick Ramirez wrote: > Option 1 is a cheaper option because the cluster doesn't need to rebalance > (with the loss of a replica) post-decommission then rebalance again when > you add a new node. > > The

Re: New seed node in the cluster immediately UN without passing for UJ state

Thank you very much for this helpful information! I opened a new thread for the other question :) Sergio Il giorno gio 13 feb 2020 alle ore 19:22 Erick Ramirez < erick.rami...@datastax.com> ha scritto: > I want to have more than one seed node in each DC, so unless I don't >> r

AWS I3.XLARGE retiring instances advices

- Decommission the one that is going to be retired - Run cleanup with cstar across the datacenters ? Thanks, Sergio

Re: New seed node in the cluster immediately UN without passing for UJ state

restart even across DCs or the restart should be happening only on the new node that I want as a seed? The reason each Datacenter has: a seed from the current DC belongs to and a seed from the other DC. Thanks, Sergio Il giorno gio 13 feb 2020 alle ore 18:41 Erick Ramirez < erick.r

Re: New seed node in the cluster immediately UN without passing for UJ state

? Thanks, Sergio Il giorno gio 13 feb 2020 alle ore 18:15 Erick Ramirez < erick.rami...@datastax.com> ha scritto: > I did decommission of this node and I did all the steps mentioned except >> the -Dcassandra.replace_address and now it is streaming correctly! > > > That wo

Re: New seed node in the cluster immediately UN without passing for UJ state

deactivated the future repair happening in the cluster while this node is joining. When you add a node is it better to stop the repair process? Thank you very much Erick! Best, Sergio Il giorno gio 13 feb 2020 alle ore 17:52 Erick Ramirez < erick.rami...@datastax.com> ha scritto: > Sh

Re: New seed node in the cluster immediately UN without passing for UJ state

Thanks for your fast reply! No repairs are running! https://cassandra.apache.org/doc/latest/faq/index.html#does-single-seed-mean-single-point-of-failure I added the node IP itself and the IP of existing seeds and I started Cassandra. So the right procedure is not to add in the seed list the

Re: New seed node in the cluster immediately UN without passing for UJ state

Should I do something to fix it or leave as it? On Thu, Feb 13, 2020, 5:29 PM Jon Haddad wrote: > Seeds don't bootstrap, don't list new nodes as seeds. > > On Thu, Feb 13, 2020 at 5:23 PM Sergio wrote: > >> Hi guys! >> >> I don't know how but this is the first ti

New seed node in the cluster immediately UN without passing for UJ state

, Sergio

Re: [EXTERNAL] Cassandra 3.11.X upgrades

/ Thanks, Sergio Il giorno mer 12 feb 2020 alle ore 10:58 Durity, Sean R < sean_r_dur...@homedepot.com> ha scritto: > Check the readme.txt for any upgrade notes, but the basic procedure is to: > >- Verify that nodetool upgradesstables has completed successfully on >

Re: [EXTERNAL] Cassandra 3.11.X upgrades

Should I follow the steps above right? Thanks Erick! On Wed, Feb 12, 2020, 6:58 PM Erick Ramirez wrote: > In case you have an hybrid situation with 3.11.3 , 3.11.4 and 3.11.5 that >> it is working and it is in production what do you recommend? > > > You shouldn't end up in this mixed-version

Re: [EXTERNAL] Cassandra 3.11.X upgrades

Thanks everyone! In case you have an hybrid situation with 3.11.3 , 3.11.4 and 3.11.5 that it is working and it is in production what do you recommend? On Wed, Feb 12, 2020, 5:55 PM Erick Ramirez wrote: > So unless the sstable format has not been changed I can avoid to do that. > > > Just to

Re: [EXTERNAL] Cassandra 3.11.X upgrades

/thread.html/r21cd99fa269076d186a82a8b466eb925681373302dd7aa6bb26e5bde%40%3Cuser.cassandra.apache.org%3E Best, Sergio Il giorno mer 12 feb 2020 alle ore 11:42 Durity, Sean R < sean_r_dur...@homedepot.com> ha scritto: > >>A while ago, on my first cluster > > > > Understateme

Re: [EXTERNAL] Cassandra 3.11.X upgrades

Thanks for your reply! So unless the sstable format has not been changed I can avoid to do that. Correct? Best, Sergio On Wed, Feb 12, 2020, 10:58 AM Durity, Sean R wrote: > Check the readme.txt for any upgrade notes, but the basic procedure is to: > >- Verify that

Re: How to elect a normal node to a seed node

I define the contact points I can specify any node in the cluster as contact point and not necessary a seed node? Best, Sergio On Wed, Feb 12, 2020, 9:08 AM Arvinder Dhillon wrote: > I believe seed nodes are not special nodes, it's just that you choose a > few nodes from cluster that

How to elect a normal node to a seed node

Hi guys! Is there a way to promote a not seed node to a seed node? If yes, how do you do it? Thanks!

Cassandra 3.11.X upgrades

Hi guys! How do you usually upgrade your cluster for minor version upgrades? I tried to add a node with 3.11.5 version to a test cluster with 3.11.4 nodes. Is there any restriction? Best, Sergio

Re: [EXTERNAL] How to reduce vnodes without downtime

Do you have any chance to take a look about this one? Il giorno lun 3 feb 2020 alle ore 23:36 Sergio ha scritto: > After reading this > > *I would only consider moving a cluster to 4 tokens if it is larger than > 100 nodes. If you read through the paper that Erick mentioned, writ

Re: sstableloader: How much does it actually need?

Another option is the DSE-bulk loader but it will require to convert to csv/json (good option if you don't like to play with sstableloader and deal to get all the sstables from all the nodes) https://docs.datastax.com/en/dsbulk/doc/index.html Cheers Sergio Il giorno mer 5 feb 2020 alle ore 16

Re: nodetool load does not match du

://docs.datastax.com/en/cassandra-oss/3.x/cassandra/tools/toolsStatus.html Il giorno lun 3 feb 2020 alle ore 23:43 Sergio ha scritto: > Thanks, Erick! > > I thought that the snapshot size was not counted in the load. > > Il giorno lun 3 feb 2020 alle ore 23:24 Erick Ramirez < > fli

Re: nodetool load does not match du

Thanks, Erick! I thought that the snapshot size was not counted in the load. Il giorno lun 3 feb 2020 alle ore 23:24 Erick Ramirez ha scritto: > Why the df -h and du -sh shows a big discrepancy? nodetool load is it >> computed with df -h? >> > > In Linux terms, df reports the filesystem disk

Re: [EXTERNAL] How to reduce vnodes without downtime

separating the Datacenter for reads from the one that handles the writes... Thanks for your help! Sergio Il giorno dom 2 feb 2020 alle ore 18:36 Anthony Grasso < anthony.gra...@gmail.com> ha scritto: > Hi Sergio, > > There is a misunderstanding here. My post makes no recom

nodetool load does not match du

Hello! I was trying to understand the below differences: Cassandra 3.11.4 i3xlarge aws nodes $ du -sh /mnt 123G/mnt $ nodetool info ID : 3647fcca-688a-4851-ab15-df36819910f4 Gossip active : true Thrift active : true Native Transport active: true Load

Re: [EXTERNAL] How to reduce vnodes without downtime

Thanks Erick! Best, Sergio On Sun, Feb 2, 2020, 10:07 PM Erick Ramirez wrote: > If you are after more details about the trade-offs between different sized >> token values, please see the discussion on the dev mailing list: "[Discuss] >> num_tokens default in Cassandra 4.0

Re: [EXTERNAL] How to reduce vnodes without downtime

Thanks Anthony! I will read more about it Best, Sergio Il giorno dom 2 feb 2020 alle ore 18:36 Anthony Grasso < anthony.gra...@gmail.com> ha scritto: > Hi Sergio, > > There is a misunderstanding here. My post makes no recommendation for the > value of num_tokens. Rather,

Re: [EXTERNAL] How to reduce vnodes without downtime

https://thelastpickle.com/blog/2019/02/21/set-up-a-cluster-with-even-token-distribution.html This is the article with 4 token recommendations. @Erick Ramirez. which is the dev thread for the default 32 tokens recommendation? Thanks, Sergio Il giorno ven 31 gen 2020 alle ore 14:49 Erick Ramirez

Re: sstableloader & num_tokens change

ame as sstableloder. > > > Regards, > > Nitan > > Cell: 510 449 9629 > > On Jan 24, 2020, at 10:40 AM, Sergio wrote: > >  > I was wondering if that improvement for token allocation would work even > with just one rack. It should but I am not sure. > > Does Dsb

Re: sstableloader & num_tokens change

I was wondering if that improvement for token allocation would work even with just one rack. It should but I am not sure. Does Dsbulk support migration cluster to cluster without CSV or JSON export? Thanks and Regards On Fri, Jan 24, 2020, 8:34 AM Nitan Kainth wrote: > Instead of

Re: Is there any concern about increasing gc_grace_seconds from 5 days to 8 days?

Thanks for the explanation. It should deserve a blog post Sergio On Wed, Jan 22, 2020, 1:22 PM Reid Pinchback wrote: > The reaper logs will say if nodes are being skipped. The web UI isn’t > that good at making it apparent. You can sometimes tell it is likely > happening when you

Re: Is there any concern about increasing gc_grace_seconds from 5 days to 8 days?

Thank you very much for your extended response. Should I look in the log some particular message to detect such behavior? How do you tune it ? Thanks, Sergio On Wed, Jan 22, 2020, 12:59 PM Reid Pinchback wrote: > Kinda. It isn’t that you have to repair twice per se, j

Re: Is there any concern about increasing gc_grace_seconds from 5 days to 8 days?

with i3xlarge nodes. Thanks, Sergio Il giorno mer 22 gen 2020 alle ore 08:28 Sergio ha scritto: > Thank you very much! Yes I am using reaper! > > Best, > > Sergio > > On Wed, Jan 22, 2020, 8:00 AM Reid Pinchback > wrote: > >> Sergio, if you’re looking for a new f

Re: Is there any concern about increasing gc_grace_seconds from 5 days to 8 days?

Thank you very much! Yes I am using reaper! Best, Sergio On Wed, Jan 22, 2020, 8:00 AM Reid Pinchback wrote: > Sergio, if you’re looking for a new frequency for your repairs because of > the change, if you are using reaper, then I’d go for repair_freq <= > gc_grace / 2.

Re: Is there any concern about increasing gc_grace_seconds from 5 days to 8 days?

Thank you very much for your response. The considerations mentioned are the ones that I was expecting. I believe that I am good to go. I just wanted to make sure that there was no need to run any other extra command beside that one. Best, Sergio On Tue, Jan 21, 2020, 3:55 PM Jeff Jirsa wrote

Re: Is there any concern about increasing gc_grace_seconds from 5 days to 8 days?

https://stackoverflow.com/a/22030790 For CQLSH alter table with GC_GRACE_SECONDS = ; Il giorno mar 21 gen 2020 alle ore 13:12 Sergio ha scritto: > Hi guys! > > I just wanted to confirm with you before doing such an operation. I expect > to increase the space but nothing more

Is there any concern about increasing gc_grace_seconds from 5 days to 8 days?

Hi guys! I just wanted to confirm with you before doing such an operation. I expect to increase the space but nothing more than this. I need to perform just : UPDATE COLUMN FAMILY cf with GC_GRACE = 691,200; //8 days Is it correct? Thanks, Sergio

Re: [EXTERNAL] Re: *URGENT* Migration across different Cassandra cluster few having same keyspace/table names

BulkLoader finds application when you want a slice of the data and not the entire cake. Is it correct? Thanks, Sergio

JMX Metrics [Cassandra-Stress-Tool VS JMX]

? The latency computed by the cassandra-stress-tool should almost match the latency shown by the JMX metrics or not? Which one do you monitor ClientRequest metrics or Table metrics or ColumnFamily? I am going to create my Grafana dashboard and explain how I configured it. Best, Sergio

Re: Find large partition https://github.com/tolbertam/sstable-tools

riting large partitions > during compaction. > > > > > > On Thu, Nov 21, 2019 at 6:33 PM Sergio Bilello > wrote: > > > Hi guys! > > Just for curiosity do you know anything beside > > https://github.com/tolbertam/sstable-

Find large partition https://github.com/tolbertam/sstable-tools

Hi guys! Just for curiosity do you know anything beside https://github.com/tolbertam/sstable-tools to find a large partition? Best, Sergio - To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands

Re: Cassandra 3.11.4 Node the load starts to increase after few minutes to 40 on 4 CPU machine

with thousands connection opened the load is below 3 in a 4 CPU machine and the latency is good. Thanks and have a great weekend Sergio Il giorno ven 1 nov 2019 alle ore 07:56 Reid Pinchback < rpinchb...@tripadvisor.com> ha scritto: > Hi Sergio, > > > > I’m definitely no

***UNCHECKED*** Re: Memory Recommendations for G1GC

on your workload. What's your experience of running Cassandra in k8s. Are you using the Cassandra Kubernetes Operator? How do you monitor it and how do you perform disaster recovery backup? Best, Sergio Il giorno ven 1 nov 2019 alle ore 14:14 Ben Mills ha scritto: > Thanks Sergio - that's g

Re: Memory Recommendations for G1GC

In any case I would test with tlp-stress or Cassandra stress tool any configuration Sergio On Fri, Nov 1, 2019, 12:31 PM Ben Mills wrote: > Greetings, > > We are planning a Cassandra upgrade from 3.7 to 3.11.5 and considering a > change to the GC config. > > What is

Re: Cassandra 4 alpha/alpha2

OOO but still relevant: Would not it be possible to create an Amazon AMI that has all the OS and JVM settings in the right place and from there each developer can tweak the things that need to be adjusted? Best, Sergio Il giorno gio 31 ott 2019 alle ore 12:56 Abdul Patel ha scritto: > Lo

Re: Cassandra 3.11.4 Node the load starts to increase after few minutes to 40 on 4 CPU machine

ked value and I used the values recommended from datastax. Do you have something different? Best, Sergio Il giorno mer 30 ott 2019 alle ore 13:27 Reid Pinchback < rpinchb...@tripadvisor.com> ha scritto: > Oh nvm, didn't see the later msg about just posting what your fix was. >

Re: Cassandra 3.11.4 Node the load starts to increase after few minutes to 40 on 4 CPU machine

https://docs.datastax.com/en/drivers/java/2.2/com/datastax/driver/core/policies/LatencyAwarePolicy.html I had to change the Policy in the Cassandra Driver. I solved this problem few weeks ago. I am just posting the solution for anyone that could hit the same issue. Best, Sergio On 2019/10/17

Re: Keyspace Clone in Existing Cluster

Rolling bounce = Rolling repair per node? Would not it be easy to be scheduled with Cassandra Reaper? On 2019/10/29 15:35:42, Paul Carlucci wrote: > Copy the schema from your source keyspace to your new target keyspace, > nodetool snapshot on your source keyspace, copy the SSTable files over,

Default values for dclocal_read_repair_chance = 0.1 and read_repair_chance = 0 Should I set both to 0?

I have a COLUMN Family in a Keyspace with Replication Factor = 3. The client reads it with LOCAL_QUORUM. Does this mean that all the reads should kick a read_repair or not? Are these parameters meaningful only with LOCAL_ONE or ONE Consistency then? I have also an application that translates some

Re: Decommissioned Node UNREACHABLE in describecluster but LEFT in gossipinfo

It disappeared from describecluster after 1 day. It is only in gossipinfo now and this looks to be ok :) On 2019/10/25 04:01:03, Sergio wrote: > Hi guys, > > Cassandra 3.11.4 > > nodetool gossipinfo > /10.1.20.49 > generation:1571694191 > heartbeat:27980

Decommissioned Node UNREACHABLE in describecluster but LEFT in gossipinfo

://grokbase.com/t/cassandra/user/162gwp6pz6/decommissioned-nodes-shows-up-in-nodetool-describecluster-as-unreachable-in-2-1-12-version Is there something that I should do to fix this? Best, Sergio

Re: Cassandra Rack - Datacenter Load Balancing relations

Thanks Reid! I agree with all the things that you said! Best, Sergio Il giorno gio 24 ott 2019 alle ore 09:25 Reid Pinchback < rpinchb...@tripadvisor.com> ha scritto: > Two different AWS AZs are in two different physical locations. Typically > different cities. Which means that y

Re: Repair Issues

Are you using Cassandra reaper? On Thu, Oct 24, 2019, 12:31 PM Ben Mills wrote: > Greetings, > > Inherited a small Cassandra cluster with some repair issues and need some > advice on recommended next steps. Apologies in advance for a long email. > > Issue: > > Intermittent repair failures on

Re: Cassandra Rack - Datacenter Load Balancing relations

Thanks Reid and Jon! Yes I will stick with one rack per DC for sure and I will look at the Vnodes problem later on. What's the difference in terms of reliability between A) spreading 2 Datacenters across 3 AZ B) having 2 Datacenters in 2 separate AZ ? Best, Sergio On Thu, Oct 24, 2019, 7:36

Re: Cassandra Rack - Datacenter Load Balancing relations

, Sergio Il giorno mer 23 ott 2019 alle ore 14:12 Jon Haddad ha scritto: > Oh, my bad. There was a flood of information there, I didn't realize you > had switched to two DCs. It's been a long day. > > I'll be honest, it's really hard to read your various options as you've > intermi

Re: Cassandra Rack - Datacenter Load Balancing relations

Here we have 2 DC read and write One Rack per DC One Availability Zone per DC Thanks, Sergio On Wed, Oct 23, 2019, 1:11 PM Jon Haddad wrote: > Personally, I wouldn't ever do this. I recommend separate DCs if you want > to keep workloads separate. > > On Wed, Oct 23, 2019 at 4:

Re: Cassandra Rack - Datacenter Load Balancing relations

TWO us-east-1b 5 write TWO us-east-1b 9. 6 write TWO us-east-1b Thanks, Sergio Il giorno mer 23 ott 2019 alle ore 12:33 Sergio ha scritto: > Hi Reid, > > Thank you very much for clearing these concepts for me. > https://community.datastax.com/comments/1133/view.h

Re: Cassandra Rack - Datacenter Load Balancing relations

for the replies Best, Sergio Il giorno mer 23 ott 2019 alle ore 10:57 Reid Pinchback < rpinchb...@tripadvisor.com> ha scritto: > No, that’s not correct. The point of racks is to help you distribute the > replicas, not further-replicate the replicas. Data centers are what do the &

Re: Cassandra Rack - Datacenter Load Balancing relations

ase correct me if I am wrong. Best, Sergio Il giorno mer 23 ott 2019 alle ore 09:21 Reid Pinchback < rpinchb...@tripadvisor.com> ha scritto: > Datacenters and racks are different concepts. While they don't have to be > associated with their historical meanings, the historical me

Cassandra Rack - Datacenter Load Balancing relations

? I am thinking to split my cluster in one datacenter for reads and one for writes and keep all the nodes in the same rack so I can scale up once node at the time. Please correct me if I am wrong Thanks, Sergio

Re: [EXTERNAL] Re: GC Tuning https://thelastpickle.com/blog/2018/04/11/gc-tuning.html

another thread opened where I am trying to figure out Kernel Settings for TCP https://lists.apache.org/thread.html/7708c22a1d95882598cbcc29bc34fa54c01fcb33c40bb616dcd3956d@%3Cuser.cassandra.apache.org%3E Do you have anything to add to that? Thanks, Sergio Il giorno lun 21 ott 2019 alle ore 15

Re: Cassandra Recommended System Settings

Thanks Elliott! How do you know if there is too much RAM used for those settings? Which metrics do you keep track of? What would you recommend instead? Best, Sergio On Mon, Oct 21, 2019, 1:41 PM Elliott Sims wrote: > Based on my experiences, if you have a new enough kernel I'd stron

Re: Cassandra Recommended System Settings

Hello! This is the kernel that I am using Linux 4.16.13-1.el7.elrepo.x86_64 #1 SMP Wed May 30 14:31:51 EDT 2018 x86_64 x86_64 x86_64 GNU/Linux Best, Sergio Il giorno lun 21 ott 2019 alle ore 07:30 Reid Pinchback < rpinchb...@tripadvisor.com> ha scritto: > I don't know whi

Re: [EXTERNAL] Re: GC Tuning https://thelastpickle.com/blog/2018/04/11/gc-tuning.html

with it and perform a test? Best, Sergio Il giorno lun 21 ott 2019 alle ore 09:27 Reid Pinchback < rpinchb...@tripadvisor.com> ha scritto: > Since the instance size is < 32gb, hopefully swap isn’t being used, so it > should be moot. > > > > Sergio, also be aware that -XX:+CMSCla

Re: GC Tuning https://thelastpickle.com/blog/2018/04/11/gc-tuning.html

/usr/share/cassandra/apache-cassandra-3.11.3.jar:/usr/share/cassandra/apache-cassandra-thrift-3.11.3.jar:/usr/share/cassandra/stress.jar: org.apache.cassandra.service.CassandraDaemon Best, Sergio Il giorno sab 19 ott 2019 alle ore 14:30 Chris Lohfink ha scritto: > "It depends" on you

Re: Cassandra Repair question

Use Cassandra reaper On Fri, Oct 18, 2019, 10:12 PM Krish Donald wrote: > Thanks Manish, > > What is the best and fastest way to repair a table using nodetool repair ? > We are using 256 vnodes . > > > On Fri, Oct 18, 2019 at 10:05 PM manish khandelwal < > manishkhandelwa...@gmail.com> wrote: >

GC Tuning https://thelastpickle.com/blog/2018/04/11/gc-tuning.html

Hello! Is it still better to use ParNew + CMS Is it still better than G1GC these days? Any recommendation for i3.xlarge nodes read-heavy workload? Thanks, Sergio - To unsubscribe, e-mail: user-unsubscr

Cassandra Recommended System Settings

PTIMIZE SSD https://docs.datastax.com/en/dse/5.1/dse-admin/datastax_enterprise/config/configRecommendedSettings.html#OptimizeSSDs https://docs.datastax.com/en/dse/5.1/dse-admin/datastax_enterprise/config/configRecommendedSettings.html We ar

Cassandra 3.11.4 Node the load starts to increase after few minutes to 40 on 4 CPU machine

10880364 used, 20260904 buff/cache KiB Swap: 0 total, 0 free, 0 used. 19341960 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 20712 cassand+ 20 0 194.1g 14.4g 4.6g S 392.0 48.2 74:50.48 java 20823 sergio.+ 20 0 124856 6304 3136 S 1.7 0.0 0:13.51 htop 7865 root 20 0 1062

Cassadra node join problem

Problem: The cassandra node does not work even after restart throwing this exception: WARN [Thread-83069] 2019-10-11 16:13:23,713 CustomTThreadPoolServer.java:125 - Transport error occurred during acceptance of message. org.apache.thrift.transport.TTransportException: java.net.SocketException: