test: expel offline instance works

test/int/test_expelling.py

@@ -108,3 +108,32 @@ def test_raft_id_after_expel(cluster: Cluster):
 
     i4 = cluster.add_instance()
     assert i4.raft_id == 4
+
+
+def test_expelled_instance_is_not_offline(cluster: Cluster):
+    cluster.deploy(instance_count=2)
+    # second instance just for quorum
+    i1, _ = cluster.instances
+
+    ddl = i1.sql(
+        """
+        CREATE TABLE "testing_space" ( "id" INTEGER NOT NULL, PRIMARY KEY ("id") )
+        DISTRIBUTED BY ("id")
+        """
+    )
+    assert ddl["row_count"] == 1
+
+    response = i1.sql(
+        "INSERT INTO testing_space VALUES " + ", ".join([f"({i})" for i in range(1000)])
+    )
+    assert response["row_count"] == 1000
+
+    i3 = cluster.add_instance()
+
+    cluster.wait_until_instance_has_this_many_active_buckets(i3, 1000)
+
+    i3.kill()
+
+    cluster.expel(i3, peer=i1)
+
+    Retriable(timeout=10).call(lambda: assert_instance_expelled(i3, i1))