On 1/6/2018 11:25 AM, SANJAY. wrote:
Please let me know how to achieve group by in solr could env.
We tried grouping in solr cloud shard replicas to fetch unique search result
from solr for custom field we .
we are getting exception saying unexpected docvalues type "SORTED_SET
(expected SORTED)"
This typically happens when you index some data and then change the
multivalued parameter on a field that has docValues without deleting the
index and starting over.
When making that kind of change to the schema, you must completely
delete the index directory for all cores in the collection, then reload
the collection or restart Solr, and reindex from scratch.
This rather extreme step is required because the Lucene index records
certain kinds of information about the docValues for each field that has
them, and if what is expected doesn't match what's actually in the
index, a severe error is encountered.
Thanks,
Shawn
