Update existing document in solr

2020-02-24 18:00 I have a Solr index in a core having 3000 documents. I want to modify the value of a single field in the entire core based on unique key PaperID. I'm using the following java code but instead of updating the existing value it adds new documents.

This question is similar to Solr doesn't overwrite duplicated uniqueKey entries, but I am in a situation where I have a large body of existing documents that have already been added to the collection with no child documents, and I am using (standalone not cloud) Solr 6. 4 rather than. We recently enabled child documents so that we could store richer data. update existing document in solr

Solr supports several modifiers that atomically update values of a document. This allows updating only specific fields, which can help speed indexing processes in an environment where speed of index additions is critical to the application.

3 Answers. When you index a document to solr, it will overwrite any existing document with the same which is usually the id. So yes, it overwrites existing data. When you want to change a single field of a document you will have to reindex the whole document, as solr does not support updating of a field only. update existing document in solr

How can the answer be improved? I have 2 answers for you (both more or less bad): To update filed with in document in Solr you have to reindex whole document (to update Field3 within document ID: you have to reindex In Solr 4 they implemented feature like that, but they have a condition: all fields have to be stored, not In general, using optimistic concurrency involves the following work flow: A client reads a document. In Solr, one might retrieve the document with A client changes the document locally. The client resubmits the changed document to Solr, for example, perhaps with the update handler. If there update existing document in solr Updating the Document Using XML. As you can observe, the XML file written to update data is just like the one which we use to add documents. But the only difference is we use the update attribute of the field. In our example, we will use the above document and try to update the fields of the document with the id 001. Suppose the XML document exists in the bin directory of Solr.

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