Not only will optimize not help, even re-indexing all
the docs to the current collection will leave the
meta-data in the index about the removed fields. For
50 fields that likely won't matter.

As Shawn says, though, re-indexing from scratch
(and I'd use a new collection) is best if at all possible.


On Thu, Sep 22, 2016 at 6:29 AM, Shawn Heisey <> wrote:
> On 9/22/2016 7:17 AM, David Santamauro wrote:
>> Will an optimize remove those fields and corresponding data?
> I am about 99 percent sure that an optimize will have no effect on
> fields removed from the Solr schema.  The schema doesn't exist at the
> Lucene level.  When you do an optimize, the entire operation is handled
> by Lucene, using its forceMerge process.
> Thanks,
> Shawn

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