ref(releases): safe remove new_group column from release model (#88046)

Author: michellewzhang

migrations_lockfile.txt

@@ -17,7 +17,7 @@ remote_subscriptions: 0003_drop_remote_subscription
 
 replays: 0004_index_together
 
-sentry: 0850_crons_drop_location
+sentry: 0851_new_group_nullable
 
 social_auth: 0002_default_auto_field
 

src/sentry/migrations/0851_new_group_nullable.py

@@ -0,0 +1,39 @@
+# Generated by Django 5.1.7 on 2025-03-26 22:59
+
+from django.db import migrations
+
+import sentry.db.models.fields.bounded
+from sentry.new_migrations.migrations import CheckedMigration
+from sentry.new_migrations.monkey.fields import SafeRemoveField
+from sentry.new_migrations.monkey.state import DeletionAction
+
+
+class Migration(CheckedMigration):
+    # This flag is used to mark that a migration shouldn't be automatically run in production.
+    # This should only be used for operations where it's safe to run the migration after your
+    # code has deployed. So this should not be used for most operations that alter the schema
+    # of a table.
+    # Here are some things that make sense to mark as post deployment:
+    # - Large data migrations. Typically we want these to be run manually so that they can be
+    #   monitored and not block the deploy for a long period of time while they run.
+    # - Adding indexes to large tables. Since this can take a long time, we'd generally prefer to
+    #   run this outside deployments so that we don't block them. Note that while adding an index
+    #   is a schema change, it's completely safe to run the operation after the code has deployed.
+    # Once deployed, run these manually via: https://develop.sentry.dev/database-migrations/#migration-deployment
+
+    is_post_deployment = False
+
+    dependencies = [
+        ("sentry", "0850_crons_drop_location"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="release",
+            name="new_groups",
+            field=sentry.db.models.fields.bounded.BoundedPositiveIntegerField(default=0, null=True),
+        ),
+        SafeRemoveField(
+            model_name="release", name="new_groups", deletion_action=DeletionAction.MOVE_TO_PENDING
+        ),
+    ]

src/sentry/models/release.py

@@ -207,8 +207,6 @@ class Release(Model):
     date_released = models.DateTimeField(null=True, blank=True)
     # arbitrary data recorded with the release
     data = JSONField(default={})
-    # Deprecated, in favor of ReleaseProject new_groups field
-    new_groups = BoundedPositiveIntegerField(default=0)
     # generally the release manager, or the person initiating the process
     owner_id = HybridCloudForeignKey("sentry.User", on_delete="SET_NULL", null=True, blank=True)