[core] Add flag to enable object reconstruction during ray start (#9488)

* Add flag

* doc

* Fix tests

python/ray/parameter.py

@@ -92,6 +92,8 @@ class RayParams:
         _internal_config (str): JSON configuration for overriding
             RayConfig defaults. For testing purposes ONLY.
         lru_evict (bool): Enable LRU eviction if space is needed.
+        enable_object_reconstruction (bool): Enable plasma reconstruction on
+            failure.
     """
 
     def __init__(self,
@@ -135,6 +137,7 @@ class RayParams:
                  java_worker_options=None,
                  load_code_from_local=False,
                  _internal_config=None,
+                 enable_object_reconstruction=False,
                  metrics_agent_port=None,
                  lru_evict=False):
         self.object_ref_seed = object_ref_seed
@@ -177,6 +180,7 @@ class RayParams:
         self.metrics_agent_port = metrics_agent_port
         self._internal_config = _internal_config
         self._lru_evict = lru_evict
+        self._enable_object_reconstruction = enable_object_reconstruction
         self._check_usage()
 
         # Set the internal config options for LRU eviction.
@@ -191,6 +195,18 @@ class RayParams:
             self._internal_config["object_store_full_max_retries"] = -1
             self._internal_config["free_objects_period_milliseconds"] = 1000
 
+        # Set the internal config options for object reconstruction.
+        if enable_object_reconstruction:
+            # Turn off object pinning.
+            if self._internal_config is None:
+                self._internal_config = dict()
+            if lru_evict:
+                raise Exception(
+                    "Object reconstruction cannot be enabled if using LRU "
+                    "eviction.")
+            self._internal_config["lineage_pinning_enabled"] = True
+            self._internal_config["free_objects_period_milliseconds"] = -1
+
     def update(self, **kwargs):
         """Update the settings according to the keyword arguments.