I'm in a similar situation where I'm
using org.apache.lucene.index.IndexUpgrader to upgrade an index from solr 4
to solr 6, and want to add docValues to the schema.
All my fields are stored so I assume I could use the DataImportHandler
SolrEntityProcessor to copy the collection to a new collection
This is a little contradictory:
> how do I reindex the data in place - without starting from the source?
> then ran my reindex SolrJ code.
So it looks like you _were_ able to re-index from scratch?
BTW, to be absolutely safe I'd re-index to a _new_ collection and
then, perhaps, use
collection a
So I ran a quick test of my idea and it worked. I modified the schema.xml
file - uploaded it to ZK - reloaded the collection - then ran my reindex
SolrJ code. After it completed the schema browser in the admin console shows
that the field uses docValues. I tried a streaming expression on it to usin
