Hello,
On next page I fount interesting statement regarding mapping total fields limit settings:
index.mapping.total_fields.limit
The maximum number of fields in an index. Field and object mappings, as well as field aliases count towards this limit. The default value is1000.
The limit is in place to prevent mappings and searches from becoming too large. Higher values can lead to performance degradations and memory issues, especially in clusters with a high load or few resources.
If you increase this setting, we recommend you also increase theindices.query.bool.max_clause_countsetting, which limits the maximum number of boolean clauses in a query.
I just want to clarify this:
It's definitely not important for Lucene indexes, as each document field is the independent Lucene index.
I can assume that this settings makes sense only in case of performing query to search by all 1000 fields together. In this case I can understand the limit, I even think that it has to be even smaller. Even such queries is unbelievable for me =)
Anyway, could you please, add additional clarification for that notice.
Actually, I tried add this by myself:
But my PR was closed, and I'm not suer, that I'm not right.
The comments from PR:
