Looks like there are a couple of issues open regarding 3.11.2 release: https://issues.apache.org/jira/browse/CASSANDRA-14355 https://issues.apache.org/jira/browse/CASSANDRA-14495
Ma On Thu, Aug 23, 2018 at 10:54 PM Mun Dega <mundeg...@gmail.com> wrote: > Interesting. Any other suggestions what other things changed that would > be major between 2.1 and 3.x? > > In Change Log all isee is bug fixes and further improvements. > > > > On Thu, Aug 23, 2018, 21:37 Gosar M <koolja...@yahoo.com.invalid> wrote: > >> we also increased the max_heap_count (sysctl.conf) value to resolve OOO >> memory issue. >> >> On Thursday, 23 August 2018, 16:04:20 GMT-7, Mun Dega < >> mundeg...@gmail.com> wrote: >> >> >> 120G data >> 28G heap out of 48 on system >> 9 node cluster, RF3 >> >> >> On Thu, Aug 23, 2018, 17:19 Mohamadreza Rostami < >> mohamadrezarosta...@gmail.com> wrote: >> >> Hi, >> How much data do you have? How much RAM do your servers have? How much do >> you have a heep? >> On Thu, Aug 23, 2018 at 10:14 PM Mun Dega <mundeg...@gmail.com> wrote: >> >> Hello, >> >> We recently upgraded from Cassandra 2.1 to 3.11.2 on one cluster. The >> process went OK including upgradesstable but we started to experience high >> latency for r/w, occasional OOM and long GC pause after. >> >> For the same cluster with 2.1, we didn't have any issues like this. We >> also kept server specs, heap, all the same in post upgrade >> >> Has anyone else had similar issues going to 3.11 and what are the major >> changes that could have such a major setback in the new version? >> >> Ma Dega >> >>
