column "{id}" holds mixed or unrecognised value types; storing as an object array. Declare a type to avoid this.

Warnings reference › ingest.mixed.*

Identifier

ingest.mixed.*

Raised by

The grid (core)

Since

1.0.1

What happened

Informational. Ingest sampled the column and could not settle on a packed representation, so it stores plain object references - correct, and considerably larger and slower than a typed column.

The fix

Declare the column's type so ingest can pack it, or clean the data so one type fits.

Reference

Covered in full at the API reference.