On 4/9/2019 12:38 PM, Lewin Joy (TMNA) wrote:
I just tried to go to the location you have specified. I could not see a "CACHE" . I can
see the "Statistics" section.
I am using Solr 7.2 on solrcloud mode.
If you are trying to select a *collection* from a dropdown, you will not
see this. It will only show up when you select a *core* from the other
dropdown.
In SolrCloud, collections are made up of one or more shards. Shards are
made up of one or more replicas. Every shard replica is a core.
Here are some partial screenshots showing what I clicked on to get to
the cache stats:
https://www.dropbox.com/s/ked4xe4w45e9qr2/cache-1.png?dl=0
https://www.dropbox.com/s/7v630mr2ii0rtee/cache-2.png?dl=0
https://www.dropbox.com/s/6czqtxq5qf8vzwz/cache-3.png?dl=0
The system where I captured these screenshots was not running in
SolrCloud mode, so it did not have the "collections" dropdown that your
admin UI will have.
When you reload a collection, Solr uses the information in ZooKeeper to
locate all of the shard replicas that make up the collection, and
reloads all those cores. So a collection reload is basically equivalent
to multiple core reloads.
Thanks,
Shawn
