Re: Recycled-Commitlogs

I guess it comes from the archive of commitlogs ，just guess~~~ But I think we need the cassandra's version and commitlog's configuration in cassandra.yaml, and commitlog_archiving.properties to determine this. Marc Hoppins 于2025年6月26日周四 16:08写道： > Hi, > > > > I am not a data person but a Linux

Re: Seeking Advice on Running Cassandra with Remote Disk

See the DISCUSS Merging compaction improvements to 5.0 , Jon said he have worked with AWS and the EBS team directly and wrote the Best Practices for C* on EBS

Re: Cassandra Restore Issue

Hello, You mean 3.11.2 will have the problem of backup data loss, but 3.11.4 will not have this problem, right? Can you provide the backup and recovery steps for these two versions? If possible, it would be better to give a few examples. For example, if three data a, b, and c are inserted, and a w

Re: Cassandra snapshot with TTL

try to replace 1HOURS with 1h ? edi mari 于2024年11月19日周二 17:52写道： > Hi, > I'm attempting to use the `snapshot` command with the `--tt` option, but I > keep encountering an error. > Can you help me figure out what I might be doing wrong? > > I'm using Cassandra v4.1.5. > > *nodetool snapshot --tt

Re: Resources on Using Single Vnode in Cassandra

I think cost is a very important point if you are going to use *single** token i*f your cluster will be very large , because every time the cluster is expanded, the nodes need to be doubled.100 -> 200, 200->400 ... This is one of the reasons why we maintain many small clusters. of course its avail

Re: Recommend Cassandra consultant

I want to at Jon Haddad 😁 Bowen Song via user 于2024年9月27日周五 16:39写道： > Hello Jeff, > > I'm not a consultant, but do have some experience on troubleshooting this > type of issues. > > The first thing in troubleshooting is gathering information. You don't > want to troubleshoot issues blindly. > >

Re: Who wants a free Cassandra t-shirt?

It seems I‘ve never had one… 😸 Patrick McFadin 于2023年7月22日 周六上午8:48写道： > We have about another week left on the user survey I posted last week. The > response has been slow, so it's time to get things in gear. > > I found a box of Cassandra t-shirts that will make an excellent thank you > for any

Re: Query on Token range

I think nodetool info with --token may do some help. ranju goel 于2023年6月9日周五 15:09写道： > Hi everyone, > > Is there any faster way to calculate the number of token ranges allocated > to a node > (x.y.z.w)? > > I used the manual way by subtracting the last token with the start token > shown in the

Re: Is cleanup is required if cluster topology changes

compact ion will just merge duplicate data and remove delete data in this node .if you add or remove one node for the cluster, I think clean up is needed. if clean up failed, I think we should come to see the reason. Runtian Liu 于2023年5月5日周五 06:37写道： > Hi all, > > Is cleanup the sole method to r

Re: Apache Cassandra Marketing Meeting - 5/26

Make a suggestion, can you consider Asian users in the future? 🤔☺😇

Re: kill session in cassandra cluster

when the query is process in coordinator node, you may just kill the node ,but if query are processed under replicate node ~~~😇 Jeff Jirsa 于2021年1月7日周四 下午3:24写道： > There have been a few bugs that lets some really bad queries run for 30+ > minutes in pathological cases, but generally you’re right

Re: CDC Tools

I have found some project that support parse Commitlog (CDC), such as : https://github.com/rustyrazorblade/commitlog-viz this seems wrote by Jon Haddad , but is not work yet. and commitlog extract tool : https://github.com/carloscm/cassandra-commitlog-extract but it also do some output to other

Re: Unable to start cassandra on GCP (Google cloud) using public email address

I think this may be that the public address is not able for you to bound. Check if the network adapter for the address is useable . I think you should ask the GCP for some details. Manu Chadha 于2019年12月18日周三 下午5:25写道： > Hi > > > > Apologies if this isn’t the right group to ask questions. If it i

Re: Optimal backup strategy

topology. Can it be used for replacement node? >2. For periodic backup Snapshot+Incremental backup is the best option > > > Thanks, > Adarsh Kumar > > On Fri, Nov 29, 2019 at 7:28 AM guo Maxwell wrote: > >> Hossein is right , But for use , we restore to the same ca

Re: Optimal backup strategy

ot. > Take backup to restore on other machine: You can use snapshot after > flushing memtable or Use sstableloader. > > > > VafaTech.com - A Total Solution for Data Gathering & Analysis > > On Thu, Nov 28, 2019 at 6:05 AM guo Maxwell wrote: > >> for cassand

Re: Optimal backup strategy

erate due to its >simplicity. But they are heavy on storage. Any views on this? >4. Please share any successful strategy that someone is using for >production. We are still in the design phase and want to implement the best >solution. > > Thanks Eric for sharing link

Re: Optimal backup strategy

For me, I think the last one : Snapshot + Incremental + commitlog is the most meaningful way to do backup and restore, when you make the data backup to some where else like AWS S3. - Snapshot based backup // for incremental data will not be backuped and may lose data when restore to the tim

Re: Curiosity in adding nodes

1.the node added to the ring will calculate the token range it owns, then get the data of the range from the nodes originally owned the data. 2.then the streamed sstable and the range of the sstable should be estimated. 3.then streaming begins .secondary index will be build afther sstabte streamed

Re: Nodetool snapshot

yes you need to restore snapshot of the node’s own snapshot for every node Abdul Patel 于2019年9月20日 周五上午2:08写道： > Thanks , i guess i have both. > So can we have either or? > If i keep auto_snapshot? Can i remove nodetool snapshot? > Woest case scenario if i wish to restore snapshot which one will

Re: Is it possible to build multi cloud cluster for Cassandra

you can build cassandra under multi cloud environment ,but there network can be connect with each other.☺ Goutham reddy 于2019年9月6日周五 上午12:36写道： > Hello, > Is it wise and advisable to build multi cloud environment for Cassandra > for High Availability. > AWS as one datacenter and Azure as another

Re: Reminder: ApacheCon NA next week

thank you very much！ Jeff Jirsa 于2019年9月5日 周四下午11:16写道： > > ApacheCon NA 2019 is next week in Las Vegas. There’s a Cassandra track, > with 3 days of just-about-cassandra talks. If you haven’t signed up, it’s > not too late (but travel / hotels get harder as time gets short): > > Register here: ht

Re: about remaining data after adding a node

his data got ttl，so just wait if he do not want do cleanup Oleksandr Shulgin 于2019年9月5日 周四下午5:48写道： > On Thu, Sep 5, 2019 at 11:19 AM Federico Razzoli < > federico.razzoli@gmail.com> wrote: > >> >> Are you using DateTieredCompactionStrategy? It optimises the deletion of >> expired data from d