Expose properties column in SQATrial

Summary: In MLHub, we use the properties column to store additional metadata on trials. We via access this via our custom MLHubDecoder, but we need to expose this column via SQA first.

Reviewed By: lena-kashtelyan

Differential Revision: D21064787

fbshipit-source-id: ba12059fdd08f7e93d6b19ee813831954b8f5f75

ax/storage/sqa_store/sqa_classes.py

@@ -292,6 +292,7 @@ class SQATrial(Base):
     time_run_started: Optional[datetime] = Column(IntTimestamp)
     trial_type: Optional[str] = Column(String(NAME_OR_TYPE_FIELD_LENGTH))
     generation_step_index: Optional[int] = Column(Integer)
+    properties: Optional[Dict[str, Any]] = Column(JSONEncodedTextDict, default={})
 
     # relationships
     # Trials and experiments are mutable, so the children relationships need

ax/storage/sqa_store/tests/utils.py

@@ -216,7 +216,7 @@
             "num_arms_created": "num_arms_created",
         },
         python_only=["experiment", "status_quo", "status_quo_weight_override"],
-        encoded_only=["is_batch", "status_quo_name", "deployed_name"],
+        encoded_only=["is_batch", "status_quo_name", "deployed_name", "properties"],
     ),
     "BraninObjective": EncodeDecodeFieldsMap(
         python_only=["metric"],
@@ -434,6 +434,7 @@
             "status_quo_name",
             "deployed_name",
             "optimize_for_power",
+            "properties",
         ],
     ),
 }