fix(ChatData):pyspark lazy load (#633)

1.fix: pyspark lazy load
2.fix: chromadb version

pilot/connections/conn_spark.py

@@ -1,6 +1,4 @@
 from typing import Optional, Any
-from pyspark.sql import SparkSession, DataFrame
-from sqlalchemy import text
 
 from pilot.connections.base import BaseConnect
 
@@ -23,13 +21,15 @@ class SparkConnect(BaseConnect):
     def __init__(
         self,
         file_path: str,
-        spark_session: Optional[SparkSession] = None,
+        spark_session: Optional = None,
         engine_args: Optional[dict] = None,
         **kwargs: Any,
     ) -> None:
         """Initialize the Spark DataFrame from Datasource path
         return: Spark DataFrame
         """
+        from pyspark.sql import SparkSession
+
         self.spark_session = (
             spark_session or SparkSession.builder.appName("dbgpt_spark").getOrCreate()
         )
@@ -47,7 +47,7 @@ def from_file_path(
         except Exception as e:
             print("load spark datasource error" + str(e))
 
-    def create_df(self, path) -> DataFrame:
+    def create_df(self, path):
         """Create a Spark DataFrame from Datasource path(now support parquet, jdbc, orc, libsvm, csv, text, json.).
         return: Spark DataFrame
         reference:https://spark.apache.org/docs/latest/sql-data-sources-load-save-functions.html

setup.py

@@ -281,7 +281,7 @@ def core_requires():
         "importlib-resources==5.12.0",
         "psutil==5.9.4",
         "python-dotenv==1.0.0",
-        "colorama==0.4.10",
+        "colorama==0.4.6",
         "prettytable",
         "cachetools",
     ]
@@ -312,7 +312,7 @@ def knowledge_requires():
     setup_spec.extras["knowledge"] = [
         "spacy==3.5.3",
         # "chromadb==0.3.22",
-        "chromadb",
+        "chromadb==0.4.10",
         "markdown",
         "bs4",
         "python-pptx",