JP-3744: set outlier step default to in-memory processing (#9214)

Co-authored-by: Tyler Pauly <[email protected]>
spacetelescope · Feb 24, 2025 · 382532d · 382532d
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diff --git a/changes/9214.outlier_detection.rst b/changes/9214.outlier_detection.rst
@@ -0,0 +1 @@
+Made in-memory processing the default for outlier detection imaging observations
diff --git a/docs/jwst/outlier_detection/outlier_detection_imaging.rst b/docs/jwst/outlier_detection/outlier_detection_imaging.rst
@@ -104,8 +104,8 @@ final output product.  Specifically,
 These concerns have been addressed by implementing an overall memory model for outlier detection that
 includes options to minimize memory usage at the expense of temporary file I/O and runtime.
 Control over this memory model happens
-with the use of the ``in_memory`` parameter. The full impact of setting this parameter
-to `False` includes:
+with the use of the ``in_memory`` parameter, which defaults to True.
+The full impact of setting this parameter to `False` includes:
 
 #. The input :py:class:`~jwst.datamodels.ModelLibrary` object is loaded with `on_disk=True`.
    This ensures that input models are loaded into memory one at at time,

diff --git a/jwst/outlier_detection/outlier_detection_step.py b/jwst/outlier_detection/outlier_detection_step.py
@@ -52,7 +52,7 @@ class OutlierDetectionStep(Step):
         resample_data = boolean(default=True)
         good_bits = string(default="~DO_NOT_USE")  # DQ flags to allow
         search_output_file = boolean(default=False)
-        in_memory = boolean(default=False) # in_memory flag ignored if run within the pipeline; set at pipeline level instead
+        in_memory = boolean(default=True) # in_memory flag ignored if run within the pipeline; set at pipeline level instead
     """  # noqa: E501
 
     def process(self, input_data):
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		Made in-memory processing the default for outlier detection imaging observations