The logs between first start and handshaking should give you a clue but my first guess would be replaying commit logs.
Cheers Ben --- *Ben Slater**Chief Product Officer* <https://www.instaclustr.com/platform/> <https://www.facebook.com/instaclustr> <https://twitter.com/instaclustr> <https://www.linkedin.com/company/instaclustr> Read our latest technical blog posts here <https://www.instaclustr.com/blog/>. This email has been sent on behalf of Instaclustr Pty. Limited (Australia) and Instaclustr Inc (USA). This email and any attachments may contain confidential and legally privileged information. If you are not the intended recipient, do not copy or disclose its content, but please reply to this email immediately and highlight the error to the sender and then immediately delete the message. On Wed, 6 Nov 2019 at 04:36, Rahul Reddy <rahulreddy1...@gmail.com> wrote: > I can reproduce the issue. > > I did drain Cassandra node then stop and started Cassandra instance . > Cassandra instance comes up but other nodes will be in DN state around 10 > minutes. > > I don't see error in the systemlog > > DN xx.xx.xx.59 420.85 MiB 256 48.2% id 2 > UN xx.xx.xx.30 432.14 MiB 256 50.0% id 0 > UN xx.xx.xx.79 447.33 MiB 256 51.1% id 4 > DN xx.xx.xx.144 452.59 MiB 256 51.6% id 1 > DN xx.xx.xx.19 431.7 MiB 256 50.1% id 5 > UN xx.xx.xx.6 421.79 MiB 256 48.9% > > when i do nodetool status 3 nodes still showing down. and i dont see > errors in system.log > > and after 10 mins it shows the other node is up as well. > > > INFO [HANDSHAKE-/10.72.100.156] 2019-11-05 15:05:09,133 > OutboundTcpConnection.java:561 - Handshaking version with /stopandstarted > node > INFO [RequestResponseStage-7] 2019-11-05 15:16:27,166 Gossiper.java:1019 > - InetAddress /nodewhichitwasshowing down is now UP > > what is causing delay for 10mins to be able to say that node is reachable > > On Wed, Oct 30, 2019, 8:37 AM Rahul Reddy <rahulreddy1...@gmail.com> > wrote: > >> And also aws ec2 stop and start comes with new instance with same ip and >> all our file systems are in ebs mounted fine. Does coming new instance >> with same ip cause any gossip issues? >> >> On Tue, Oct 29, 2019, 6:16 PM Rahul Reddy <rahulreddy1...@gmail.com> >> wrote: >> >>> Thanks Alex. We have 6 nodes in each DC with RF=3 with CL local qourum >>> . and we stopped and started only one instance at a time . Tough nodetool >>> status says all nodes UN and system.log says canssandra started and started >>> listening . Jmx explrter shows instance stayed down longer how do we >>> determine what caused the Cassandra unavialbe though log says its stared >>> and listening ? >>> >>> On Tue, Oct 29, 2019, 4:44 PM Oleksandr Shulgin < >>> oleksandr.shul...@zalando.de> wrote: >>> >>>> On Tue, Oct 29, 2019 at 9:34 PM Rahul Reddy <rahulreddy1...@gmail.com> >>>> wrote: >>>> >>>>> >>>>> We have our infrastructure on aws and we use ebs storage . And aws was >>>>> retiring on of the node. Since our storage was persistent we did nodetool >>>>> drain and stopped and start the instance . This caused 500 errors in the >>>>> service. We have local_quorum and rf=3 why does stopping one instance >>>>> cause >>>>> application to have issues? >>>>> >>>> >>>> Can you still look up what was the underlying error from Cassandra >>>> driver in the application logs? Was it request timeout or not enough >>>> replicas? >>>> >>>> For example, if you only had 3 Cassandra nodes, restarting one of them >>>> reduces your cluster capacity by 33% temporarily. >>>> >>>> Cheers, >>>> -- >>>> Alex >>>> >>>>
