Indexing a document in Solr without field "id"

Question

I have to index a file that doesn't have any field named key. I know there is a concept of Unique key in Solr. Can any one help me in the same. I have followed the following steps:-

1. Changing the Unique Key to some other field (say name)
2. Changing required="true" to required="false" for field id

Still I am not able to index a file which doesn't have id.

Answer 1

In schema.xml you can specify which key is unique amongst your documents. Ref

Also, you may want to read through this reference, which describes various use cases around Unique Key.