Re: Incremental repair

2018-08-20 Thread Alexander Dejanovski
Hi Pratchi, Incremental has been the default since C* 2.2. You can run a full repair by adding the "--full" flag to your nodetool command. Cheers, Le lun. 20 août 2018 à 19:50, Prachi Rath a écrit : > Hi Community, > > I am currently creating a new cluster with cassandra 3.11.2 ,while >

Incremental repair

2018-08-20 Thread Prachi Rath
Hi Community, I am currently creating a new cluster with cassandra 3.11.2 ,while enabling repair noticed that incremental repair is true in logfile. (parallelism: parallel, primary range: true, incremental: true, job threads: 1, ColumnFamilies: [], dataCenters: [], hosts: [], # of ranges: 20,

JMX for row cache churn

2018-08-20 Thread John Sumsion
Is there a JMX property somewhere that I could monitor to see how old the oldest row cache item is? I want to see how much churn there is. Thanks in advance, John...

Re: JBOD disk failure - just say no

2018-08-20 Thread James Briggs
Cassandra JBOD has a bunch of issues, so I don't recommend it for production: 1) disks fill up with load (data) unevenly, meaning you can run out on a disk while some are half-full2) one bad disk can take out the whole node3) instead of a small failure probability on an LVM/RAID volume, with

Re: Configuration parameter to reject incremental repair?

2018-08-20 Thread kurt greaves
Yeah I meant 2.2. Keep telling myself it was 3.0 for some reason. On 20 August 2018 at 19:29, Oleksandr Shulgin wrote: > On Mon, Aug 13, 2018 at 1:31 PM kurt greaves wrote: > >> No flag currently exists. Probably a good idea considering the serious >> issues with incremental repairs since

Re: Repair daily refreshed table

2018-08-20 Thread Maxim Parkachov
Hi Raul, I cannot afford delete and then load as this will create downtime for the record, that's why I'm upserting with TTL today()+7days as I mentioted in my original question. And at the moment I don't have an issue either with loading nor with access times. My question is should I repair such

RE: Repair daily refreshed table

2018-08-20 Thread Per Otterström
Hi Maxim. Assuming all your update operations are successful and that you only delete data by TTL in that table, then you shouldn’t have to do repairs on it. You may also consider to lower the gc_grace_seconds value on that table, but you should be aware of how this impacts hints and logged

Re: Extending Cassandra on AWS from single Region to Multi-Region

2018-08-20 Thread Oleksandr Shulgin
On Thu, Aug 9, 2018 at 3:46 AM srinivasarao daruna wrote: > Hi All, > > We have built Cassandra on AWS EC2 instances. Initially when creating > cluster we have not considered multi-region deployment and we have used AWS > EC2Snitch. > > We have used EBS Volumes to save our data and each of those

Re: Configuration parameter to reject incremental repair?

2018-08-20 Thread Oleksandr Shulgin
On Mon, Aug 13, 2018 at 1:31 PM kurt greaves wrote: > No flag currently exists. Probably a good idea considering the serious > issues with incremental repairs since forever, and the change of defaults > since 3.0. > Hi Kurt, Did you mean since 2.2 (when incremental became the default one)? Or

Re: Adding new datacenter to the cluster

2018-08-20 Thread Oleksandr Shulgin
On Mon, Aug 13, 2018 at 3:50 PM Vitali Dyachuk wrote: > Hello, > I'm going to follow this documentation to add a new datacenter to the C* > cluster > > https://docs.datastax.com/en/cassandra/3.0/cassandra/operations/opsAddDCToCluster.html > > The main step is to run nodetool rebuild which will