Re: Lost counter updates during Cassandra upgrade 2.2.11 to 3.11.2
Hi, I haven't investigated the issue further. -- Konrad On Sat, Nov 10, 2018, at 05:49, Laxmikant Upadhyay wrote: > Hi, > > I have faced similar issue while upgrading from 2.1.16 -> 3.11.2 in a > 3 node cluster.> I have raised jira ticket CASSANDRA-14881[1] for this issue > , but have > not got any response on this yet.> @Konrad did you get any resolution on this > ? > > Regards, > Laxmikant > > > > > On Thu, Jul 26, 2018 at 5:34 PM Konrad wrote:>> Hi, >> >> During rolling upgrade of our cluster we noticed that some updates >> on table with counters were not being applied. It looked as if it >> depended on whether coordinator handling request was already >> upgraded or not. I observed similar behavior while using cqlsh and >> executing queries manually. Sometimes it took several retries to see >> counter updated. There were no errors/warns in neither application >> nor Cassandra logs. The updates started working reliably once again >> when all nodes in dc have been upgraded. However, the lost updates >> did not reappear.>> >> Our setup: >> 2 dc cluster, 5 + 5 nodes. However, only one is used for queries as >> client application is co-located in one region. I believe 1 dc is >> enough to reproduce it.>> Replication factor 3+2 >> Consistency level LOCAL_QUORUM >> Upgrading 2.2.11 to 3.11.2 >> >> I haven't found any report of similar issue on the internet. Has >> anyone heard about such behavior?>> >> Thanks, >> Konrad >> >> --- >> -->> To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org >> For additional commands, e-mail: user-h...@cassandra.apache.org >> > > > -- > > regards, > Laxmikant Upadhyay > Links: 1. https://issues.apache.org/jira/browse/CASSANDRA-14881
Lost counter updates during Cassandra upgrade 2.2.11 to 3.11.2
Hi, During rolling upgrade of our cluster we noticed that some updates on table with counters were not being applied. It looked as if it depended on whether coordinator handling request was already upgraded or not. I observed similar behavior while using cqlsh and executing queries manually. Sometimes it took several retries to see counter updated. There were no errors/warns in neither application nor Cassandra logs. The updates started working reliably once again when all nodes in dc have been upgraded. However, the lost updates did not reappear. Our setup: 2 dc cluster, 5 + 5 nodes. However, only one is used for queries as client application is co-located in one region. I believe 1 dc is enough to reproduce it. Replication factor 3+2 Consistency level LOCAL_QUORUM Upgrading 2.2.11 to 3.11.2 I haven't found any report of similar issue on the internet. Has anyone heard about such behavior? Thanks, Konrad - To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands, e-mail: user-h...@cassandra.apache.org
Spotify at Cassandra Europe. Last tickets remaining.
Hi All, The first ever edition of Cassandra Europe is now only two weeks away. Only a few tickets remain so if you intend to attend, make sure to book now to avoid disappointment. We are happy to announce that Spotify have become sponsors of Cassandra Europe. In addition to Spotify, we are pleased to bring you talks from the world's top developers and users of Cassandra including Netflix, Rackspace and Dachis Group. A full list of talks is available on the website. You should attend if: - you're considering moving away from Oracle / MySQL and exploring NoSQL solutions; - you're considering using Cassandra; - are curious about what it offers and what other people do with it; - want to know how it compares to all the other NoSQL offerings and Hadoop; - want to know more about how Cassandra works. In particular, we're encouraging CTOs, CIOs, CEOs, Sys Admins, Developers, Dev Ops, and Architects to attend. More information and tickets can be found here: http://cassandra-eu.org/ Your friendly Cassandra Europe team.
Cassandra Europe
Hi, We're organising Europe's first Apache Cassandra conference - Cassandra Europe. It takes place on March 28th in London. We'll be having some of the top PMCs, committers and users attending. I'm trying to get people's input and was wondering if you had any suggestions for what you'd like to see at Cassandra Europe? You can find more details about the conference itself here: http://cassandra-eu.org/en Appreciate the help! Best wishes, Konrad
