There is a bad oversight on our part which causes preferences to not be used for placing replicas unless a cluster policy also exists. We hope to fix it in the next release (Solr 7.5). See https://issues.apache.org/jira/browse/SOLR-12648
You may also be interested in https://issues.apache.org/jira/browse/SOLR-12592 On Tue, Aug 28, 2018 at 2:47 AM Kudrettin Güleryüz <kudret...@gmail.com> wrote: > Hi, > > We have six Solr nodes with ~1TiB disk space on each mounted as ext4. The > indexers sometimes update the collections and create new ones if update > wouldn't be faster than scratch indexing. (up to around 5 million documents > are indexed for each collection) On average there are around 130 > collections on this SolrCloud. Collection sizes vary from 1GiB to 150GiB. > > Preferences set: > > "cluster-preferences":[{ > "maximize":"freedisk", > "precision":10} > ,{ > "minimize":"cores", > "precision":1} > ,{ > "minimize":"sysLoadAvg", > "precision":3}], > > * Is it be possible to run out of disk space on one of the nodes while > others would have plenty? I observe some are getting close to ~80% > utilization while others stay at ~60% > * Would this difference be due to collection index size differences or due > to error on my side to come up with a useful policy/preferences? > > Thank you > -- Regards, Shalin Shekhar Mangar.
