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Fix: Ensure unique index names for pgvector knowledge tables (#19672)

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Co-authored-by: crazywoola <427733928@qq.com>
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k-kayashima 2025-05-15 12:43:44 +09:00 committed by GitHub
parent 486a66be54
commit b292990075
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1 changed files with 6 additions and 5 deletions
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11
api/core/rag/datasource/vdb/pgvector/pgvector.py
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@ -1,3 +1,4 @@
import hashlib
import json
import logging
import uuid
@ -61,12 +62,12 @@ CREATE TABLE IF NOT EXISTS {table_name} (
"""
SQL_CREATE_INDEX = """
CREATE INDEX IF NOT EXISTS embedding_cosine_v1_idx ON {table_name}
CREATE INDEX IF NOT EXISTS embedding_cosine_v1_idx_{index_hash} ON {table_name}
USING hnsw (embedding vector_cosine_ops) WITH (m = 16, ef_construction = 64);
"""
SQL_CREATE_INDEX_PG_BIGM = """
CREATE INDEX IF NOT EXISTS bigm_idx ON {table_name}
CREATE INDEX IF NOT EXISTS bigm_idx_{index_hash} ON {table_name}
USING gin (text gin_bigm_ops);
"""
@ -76,6 +77,7 @@ class PGVector(BaseVector):
super().__init__(collection_name)
self.pool = self._create_connection_pool(config)
self.table_name = f"embedding_{collection_name}"
self.index_hash = hashlib.md5(self.table_name.encode()).hexdigest()[:8]
self.pg_bigm = config.pg_bigm
def get_type(self) -> str:
@ -256,10 +258,9 @@ class PGVector(BaseVector):
# PG hnsw index only support 2000 dimension or less
# ref: https://github.com/pgvector/pgvector?tab=readme-ov-file#indexing
if dimension <= 2000:
cur.execute(SQL_CREATE_INDEX.format(table_name=self.table_name))
cur.execute(SQL_CREATE_INDEX.format(table_name=self.table_name, index_hash=self.index_hash))
if self.pg_bigm:
cur.execute("CREATE EXTENSION IF NOT EXISTS pg_bigm")
cur.execute(SQL_CREATE_INDEX_PG_BIGM.format(table_name=self.table_name))
cur.execute(SQL_CREATE_INDEX_PG_BIGM.format(table_name=self.table_name, index_hash=self.index_hash))
redis_client.set(collection_exist_cache_key, 1, ex=3600)