Unable to execute CLUSTER NODES command

[mariemec]

Version: Redis-py 4.1.4

Platform: Python 3.9.10 on MacOS BigSur 11.5.2

Description: I have created a RedisCluster client. I want to execute the CLUSTER NODES command in order to get the node IDs. I have tried using the helper function and the execute_command function directly, but both seem to raise an error.

My code:

    rc = redis.cluster.RedisCluster.from_url(f'redis://{user}:{password}@{ip}:{port}/0') 
    cluster_nodes = rc.get_nodes() # This works and provides the expected output
    masters = rc.get_primaries() # This works and provides the expected output
    slaves = rc.get_replicas() # This works and provides the expected output
    data = rc.cluster_nodes() <-- this fails
    # I have also tried data = rc.execute_command('CLUSTER NODES') which resulted in the same issue

There seems to be a problem with how the response callback is parsed (expecting a string and getting an int, maybe?)
The error returned:

Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/redis/cluster.py", line 954, in _execute_command
    response = redis_node.parse_response(connection, command, **kwargs)
  File "/usr/lib/python3.9/site-packages/redis/client.py", line 1198, in parse_response
    return self.response_callbacks[command_name](response, **options)
  File "/usr/lib/python3.9/site-packages/redis/client.py", line 490, in parse_cluster_nodes
    return dict(_parse_node_line(str_if_bytes(node)) for node in response)
  File "/usr/lib/python3.9/site-packages/redis/client.py", line 490, in <genexpr>
    return dict(_parse_node_line(str_if_bytes(node)) for node in response)
  File "/usr/lib/python3.9/site-packages/redis/client.py", line 466, in _parse_node_line
    line_items = line.split(" ")
AttributeError: 'int' object has no attribute 'split'
Traceback (most recent call last):
  File "//./redis-util.py", line 70, in <module>
    display(user, host)
  File "//./redis-util.py", line 43, in display
    data = rc.cluster_nodes()
  File "/usr/lib/python3.9/site-packages/redis/commands/cluster.py", line 313, in cluster_nodes
    return self.execute_command("CLUSTER NODES")
  File "/usr/lib/python3.9/site-packages/redis/cluster.py", line 909, in execute_command
    raise e
  File "/usr/lib/python3.9/site-packages/redis/cluster.py", line 899, in execute_command
    res[node.name] = self._execute_command(node, *args, **kwargs)
  File "/usr/lib/python3.9/site-packages/redis/cluster.py", line 1028, in _execute_command
    raise e
  File "/usr/lib/python3.9/site-packages/redis/cluster.py", line 954, in _execute_command
    response = redis_node.parse_response(connection, command, **kwargs)
  File "/usr/lib/python3.9/site-packages/redis/client.py", line 1198, in parse_response
    return self.response_callbacks[command_name](response, **options)
  File "/usr/lib/python3.9/site-packages/redis/client.py", line 490, in parse_cluster_nodes
    return dict(_parse_node_line(str_if_bytes(node)) for node in response)
  File "/usr/lib/python3.9/site-packages/redis/client.py", line 490, in <genexpr>
    return dict(_parse_node_line(str_if_bytes(node)) for node in response)
  File "/usr/lib/python3.9/site-packages/redis/client.py", line 466, in _parse_node_line
    line_items = line.split(" ")
AttributeError: 'int' object has no attribute 'split'

Any help would be appreciated!

[mariemec]

After sifting through other issues raised in the repo, I found that this problem was fixed by setting the decode_responses=True when instantiating my RedisCluster client:
rc = redis.cluster.RedisCluster.from_url(f'redis://{user}:{password}@{ip}:{port}/0', decode_responses=True)