Hi Kshitij What I can guess over here. Pull replicas replicate segments from tlog, so whenever merge happens on tlog it will decrease the number of segments which is more than ideal case(i.e. adding a new segment). Afaik adding/deleting the segment is kind of a stop the world moment. This can be the reason for the increase in response time.
Regards, Abhishek On Thu, Jan 7, 2021 at 12:43 PM kshitij tyagi <kshitij.s...@gmail.com> wrote: > Hi, > > I am not querying on tlog replicas, solr version is 8.6 and 2 tlogs and 4 > pull replica setup. > > why should pull replicas be affected during background segment merges? > > Regards, > kshitij > > On Wed, Jan 6, 2021 at 9:48 PM Ritvik Sharma <ritvik.s...@gmail.com> > wrote: > > > Hi > > It may be the cause of rebalancing and querying is not available not on > > tlog at that moment. > > You can check tlog logs and pull log when u are facing this issue. > > > > May i know which version of solr you are using? and what is the ration of > > tlog and pull nodes. > > > > On Wed, 6 Jan 2021 at 2:46 PM, kshitij tyagi <kshitij.s...@gmail.com> > > wrote: > > > > > Hi, > > > > > > I am having a tlog + pull replica solr cloud setup. > > > > > > 1. I am observing that whenever background segment merge is triggered > > > automatically, i see high response time on all of my solr nodes. > > > > > > As far as I know merges must be happening on tlog and hence the > increase > > > response time, i am not able to understand that why my pull replicas > are > > > affected during background index merges. > > > > > > Can someone give some insights on this? What is affecting my pull > > replicas > > > during index merges? > > > > > > Regards, > > > kshitij > > > > > >
