docvalue_fields support wildcard?

[jgq2008303393]

Hi, all.

When using docvalue_fields, we would like to use wildcard like stored_fields:

# already supported
GET /index/_search
{
  "stored_fields": ["*"]
}

# not support now
GET /index/_search
{
  "docvalue_fields": ["*"]
}

Looking forward to this feature.

[jpountz]

Agreed we should support it for consistency.

[jpountz]

We discussed it in FixitFriday. We agreed to do this, but at the same time we should probably add a soft limit over the number of doc_values and script fields that are requested (computed based on the number of matches in the mappings) since doc-values fields come up with a per-field per-document seek (while stored fields only incur a per-document seek regardless of the number of fields).

[jpountz]

I opened #26390.

[cbuescher]

/cc @elastic/es-search-aggs

[oleksii-sl]

any updates here? I have object with 60 fields and all of them are needed to be extracted

[mayya-sharipova]

@serdyuk-alex the issue is still marked as "adoptme", it is not implemented yet.