On 5/10/2018 7:51 AM, Issei Nishigata wrote:
I create a field called employee_name, and use it as multiValued.
If “Mr.Smith" that is part of the value of the field is changed to
“Mr.Brown", do I have to create 1 million deletion queries
and updating queries in case where “Mr.Smith" appears in 1 million
documents?
Do we have a simple way of updating to use only 1 query?
Solr is not a database. There is no functionality to update field X on
all documents that match a query.
If your index has a field designated as uniqueKey, you won't need to do
a delete, you can just reindex those documents and Solr will do the
delete for you. If you do not have a uniqueKey, then you will need to
delete the old document before indexing its replacement.
https://wiki.apache.org/solr/HowToReindex
If your index meets the criteria for Atomic Updates, then you could use
the delete/add functionality in that feature to take care of it. Solr
will construct a complete document from your atomic update and all the
data currently in the document, then index the new document, deleting
the old one in the process. Atomic Updates also require a uniqueKey.
See this page for information on Atomic Updates and the field storage
requirements:
https://lucene.apache.org/solr/guide/7_3/updating-parts-of-documents.html
Thanks,
Shawn
