Shawn, Is it possible to run optimize on the live collection? For example, /solr/collection/update?commit=true&optimize=true
On Wed, 22 Aug 2018 at 06:50, Shawn Heisey <apa...@elyograg.org> wrote: > On 8/21/2018 2:29 AM, Artjoms Laivins wrote: > > We are running Solr cloud with 3 nodes v. 6.6.2 > > We started with version 5 so we have some old index that we need safely > move over to v. 7 now. > > New data comes in several times per day. > > Our questions are: > > > > Should we run IndexUpgrader tool on one slave node that is down or it is > safe to run it while Solr is running and possible updates of the index are > coming? > > If yes, when we start it again will leader update this node with new > data only or will it overwrite index? > > It might not be possible to upgrade two major versions like that, even > with IndexUpgrader. There is only a guarantee of reading an index > ORIGINALLY written by the previous major version. > > Even if it's possible to accomplish an upgrade, it is strongly > recommended that you index from scratch anyway. > > You cannot run IndexUpgrader while Solr has the index open. The index > must be completely closed. You cannot update an index while it is being > upgraded. > > Thanks, > Shawn > >
