During Reload collection, it does close the IndexWriter and opens a new. So looks like with live traffic (is it heavy traffic, how many qps?) and collection reload, its running into a situation when IndexWriter is not able to open up again. Not sure if this issue might have been fixed in 5 or 6.x and may work fine in latest 6.6.1 if you could test anyway.
https://www.quora.com/What-happens-during-a-Solr-Core-Reload On Tue, Sep 12, 2017 at 12:47 PM, Kelly, Frank <frank.ke...@here.com> wrote: > The schema change doesn¹t seem to be making any difference - just the act > of a reload whilst handling live traffic. > > The reload takes about 30 seconds and soon after (within a few seconds) we > start to see IndexWriter closed exceptions > > -Frank > > > Frank Kelly > Principal Software Engineer > Identity Profile Team (SCBE, Traces, CDA) > > HERE > 5 Wayside Rd, Burlington, MA 01803, USA > 42° 29' 7" N 71° 11' 32" W > > <http://360.here.com/> <https://www.twitter.com/here> > <https://www.facebook.com/here> > <https://www.linkedin.com/company/heremaps> > <https://www.instagram.com/here/> > > > > On 9/12/17, 9:13 AM, "Susheel Kumar" <susheel2...@gmail.com> wrote: > > >Kelly - > > > >If you do not make any change to schema and just reload your collection, > >does it work fine? How much time it takes to reload the collection? > > > >I am suspecting some conflict with commit frequency (5mins) and collection > >reload. > > > >Thnx > >
