Thank you all. I will try different options and will let you know which one worked for my case.
On Wed, Mar 23, 2022 at 3:25 AM Bowen Song <bo...@bso.ng> wrote: > I remember we had the same issue back in the Cassandra 2.x days, and > restarting the affected node only makes the issue go away temporarily. The > issue we had was "fixed" by adding > "-Dcassandra.max_queued_native_transport_requests=4096" to the JVM options. > I dug that option out from our old Ansible playbook. Now, after so many > years, I've long forgotten what does that option do. > > Please seriously consider upgrade your Cassandra cluster to the least > version. I can't tell which exact version fixed this bug, but we had > removed this from our servers many years ago after several rounds of > upgrades, and we have not had the NTR pool blocking issue coming back. > On 23/03/2022 04:29, Jaydeep Chovatia wrote: > > Hi, > > I have been using Cassandra 3.0.14 in production for a long time. Recently > I have found a bug in that, all of a sudden the transport thread-pool > hangs. > > *Observation:* > If I do *nodetool tpstats*, then it shows *"Native-Transport-Requests"* > is blocking "Active" tasks. I stopped the complete traffic, and sent a very > light load, but still my requests are getting denied, and active transport > blocked tasks keep happening. > > *Fix:* > If I restart my cluster, then everything works fine, which means there > might be some deadlock, etc. in the system. > > > Is anyone aware of this issue? I know there have been quite a lot of fixes > on top of 3.0.14, is there any specific fix that addresses this particular > issue? > > Any help would be appreciated. > > Yours Sincerely, > Jaydeep > >
