knn query on semantic_text field with semantic_text filter fails #138410
Description
Elasticsearch Version
9.2
Installed Plugins
No response
Java Version
bundled
OS Version
Darwin
Problem Description
A knn query on a semantic_text field fails when it contains filters that are other queries on semantic_text fields (e.g. knn, sparse_vector, match).
Steps to Reproduce
PUT example
{
"settings": {
"number_of_shards": 1,
"number_of_replicas": 0
},
"mappings": {
"properties": {
"semantic_1": {
"type": "semantic_text",
"inference_id": ".multilingual-e5-small-elasticsearch"
},
"semantic_2": {
"type": "semantic_text",
"inference_id": ".multilingual-e5-small-elasticsearch"
}
}
}
}
POST example/_doc
{
"semantic_1" : "something",
"semantic_2": "else"
}
POST example/_search
{
"query": {
"knn": {
"field": "semantic_1",
"k": 10,
"num_candidates": 10,
"query_vector_builder": {
"text_embedding": {
"model_text":"something"
}
},
"filter": {
"match": {
"semantic_2": {
"query": "else"
}
}
}
}
}
}
POST example/_search
{
"query": {
"knn": {
"field": "semantic_1",
"k": 10,
"num_candidates": 10,
"query_vector_builder": {
"text_embedding": {
"model_text":"something"
}
},
"filter": {
"knn": {
"field": "semantic_2",
"k": 10,
"num_candidates": 10,
"query_vector_builder": {
"text_embedding": {
"model_text":"else"
}
}
}
}
}
}
}
The first search fails with:
{
"error": {
"root_cause": [
{
"type": "query_shard_exception",
"reason": "failed to create query: Field [semantic_2] of type [semantic_text] does not support match queries",
"index_uuid": "L3c8k2aUSs-Op5fBJ4ve7Q",
"index": "example"
}
],
"type": "search_phase_execution_exception",
"reason": "all shards failed",
"phase": "query",
"grouped": true,
"failed_shards": [
{
"shard": 0,
"index": "example",
"node": "-NqAZhF6RRyaxBJIjRIdiA",
"reason": {
"type": "query_shard_exception",
"reason": "failed to create query: Field [semantic_2] of type [semantic_text] does not support match queries",
"index_uuid": "L3c8k2aUSs-Op5fBJ4ve7Q",
"index": "example",
"caused_by": {
"type": "illegal_argument_exception",
"reason": "Field [semantic_2] of type [semantic_text] does not support match queries"
}
}
}
]
},
"status": 400
}
The second fails with:
{
"error": {
"root_cause": [
{
"type": "illegal_state_exception",
"reason": "async actions are left after rewrite"
}
],
"type": "search_phase_execution_exception",
"reason": "all shards failed",
"phase": "query",
"grouped": true,
"failed_shards": [
{
"shard": 0,
"index": "example",
"node": "-NqAZhF6RRyaxBJIjRIdiA",
"reason": {
"type": "illegal_state_exception",
"reason": "async actions are left after rewrite"
}
}
],
"caused_by": {
"type": "illegal_state_exception",
"reason": "async actions are left after rewrite",
"caused_by": {
"type": "illegal_state_exception",
"reason": "async actions are left after rewrite"
}
}
},
"status": 500
}