Status: IN
`TermPartitionedDB.query_by_field` looks up a single index partition by term hash then fetches documents from their home partitions, touching 1 + K partitions (K = distinct data partitions) instead of scattering to all.
Source: entries/2026/05/29/secondary-index-partitioning-secondary_index_partitioning.md
partition = self._get_index_partition(field, value)
return partition.lookup(field, value) # single partition