Solr reindex script for migrating from solr 6 to solr 9#243
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…an all_text_timv in the old solr
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This script avoids fetching everything from fedora and running
to_solr. Instead it attempts to reconstruct a full solr document from the solr document returned from querying the old solr. In most cases this is possible due to duplicate fields with one being stored. Unfortunately this isn't possible for all documents. In particular file sets with extracted text need to be reindexed the slow way so I added a check invalidate_reconstructablefor this case.If this looks good then I think next steps would be: