'test_bucket_w_default_event_based_hold' systest is flaky #435

__________ TestRetentionPolicy.test_bucket_w_default_event_based_hold __________

self = <test_system.TestRetentionPolicy testMethod=test_bucket_w_default_event_based_hold>

    def test_bucket_w_default_event_based_hold(self):
        from google.api_core import exceptions

        new_bucket_name = "w-def-ebh" + unique_resource_id("-")
        self.assertRaises(
            exceptions.NotFound, Config.CLIENT.get_bucket, new_bucket_name
        )
        bucket = retry_429_503(Config.CLIENT.create_bucket)(new_bucket_name)
        self.case_buckets_to_delete.append(new_bucket_name)

        bucket.default_event_based_hold = True
        bucket.patch()

        self.assertTrue(bucket.default_event_based_hold)
        self.assertIsNone(bucket.retention_period)
        self.assertIsNone(bucket.retention_policy_effective_time)
        self.assertFalse(bucket.retention_policy_locked)

        blob_name = "test-blob"
        payload = b"DEADBEEF"
        blob = bucket.blob(blob_name)
        blob.upload_from_string(payload)

        self.case_blobs_to_delete.append(blob)

        other = bucket.get_blob(blob_name)

        self.assertTrue(other.event_based_hold)
        self.assertFalse(other.temporary_hold)
        self.assertIsNone(other.retention_expiration_time)

        with self.assertRaises(exceptions.Forbidden):
            other.delete()

        other.event_based_hold = False
        other.patch()
        other.delete()

        bucket.default_event_based_hold = False
        bucket.patch()

        self.assertFalse(bucket.default_event_based_hold)
        self.assertIsNone(bucket.retention_period)
        self.assertIsNone(bucket.retention_policy_effective_time)
        self.assertFalse(bucket.retention_policy_locked)

        blob.upload_from_string(payload)
>       self.assertFalse(blob.event_based_hold)
E       AssertionError: True is not false

tests/system/test_system.py:2442: AssertionError