start_cluster = True, cluster = <cluster.Cluster object at 0x7f6f60477850>

    @pytest.mark.timeout(3600,func_only=True)
    def test_load(start_cluster,cluster):
        cluster.check_pbm_status()
        indexes = []
    
        for i in range(63):
            indexes.append(pymongo.IndexModel(str(i),background=True))
    
        for i in range(1500):
            database = ''.join(random.choice(string.ascii_lowercase) for _ in range(63))
            client=pymongo.MongoClient(cluster.connection)
            db = client[database]
            db.create_collection("test_collection")
            db["test_collection"].create_indexes(indexes)
            Cluster.log( database + ": " + str(i))
    
>       backup = cluster.make_backup("physical")

test_PBM-1252.py:61: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <cluster.Cluster object at 0x7f6f60477850>, type = 'physical'

    def make_backup(self, type):
        n = testinfra.get_host("docker://" + self.pbm_cli)
        timeout = time.time() + 120
        while True:
            running = self.get_status()['running']
            Cluster.log("Current operation: " + str(running))
            if not running:
                if type:
                    start = n.check_output(
                        'pbm backup --out=json --type=' + type)
                else:
                    start = n.check_output('pbm backup --out=json')
                name = json.loads(start)['name']
                Cluster.log("Backup started")
                break
            if time.time() > timeout:
                assert False
            time.sleep(1)
        timeout = time.time() + 900
        while True:
            status = self.get_status()
            Cluster.log("Current operation: " + str(status['running']))
            if status['backups']['snapshot']:
                for snapshot in status['backups']['snapshot']:
                    if snapshot['name'] == name:
                        if snapshot['status'] == 'done':
                            Cluster.log("Backup found: " + str(snapshot))
                            return name
                            break
                        elif snapshot['status'] == 'error':
                            self.get_logs()
>                           assert False, snapshot['error']
E                           AssertionError: set shard's files list: an inserted document is too large

cluster.py:404: AssertionError