Shalin Shekhar Mangar created SOLR-6020:
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Summary: Auto-generate a unique key in schema-less mode if data
does not have an "id" field
Key: SOLR-6020
URL: https://issues.apache.org/jira/browse/SOLR-6020
Project: Solr
Issue Type: Improvement
Components: Schema and Analysis
Reporter: Shalin Shekhar Mangar
Currently it is not possible to use the schema-less example if my data does not
have an "id" field.
I was indexing data where the unique field name was "url" in schema-less mode.
This requires one to first change unique key name in the schema and then start
solr and then index docs. If one had already started solr, one'd first need to
remove managed-schema, rename schema.xml.bak to schema.xml and then make the
necessary changes in schema.xml. I don't think we should fail on such simple
things.
Here's what I propose:
# We remove "id" and uniqueKey from the managed schema example
# If there's a field named "id" in the document, we use that as the uniqueKey
# Else we fallback on generating a UUID or a signature field via an update
processor and store it as the unique key field. We can name it as "id" or "_id"
# But if a uniqueKey is already present in original schema.xml then we should
expect the incoming data to have that field and we should preserve the current
behavior of failing loudly.
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