TasksClient.get() requiring an argument on v7.5.1

Elasticsearch version (bin/elasticsearch --version): 7.1.1, 7.5.1

elasticsearch-py version (elasticsearch.__versionstr__): 7.5.1

Please make sure the major version matches the Elasticsearch server you are running.

Description of the problem including expected versus actual behavior:

Elasticsearch().tasks.get() fails using elasticsearch-py 7.5.1, whereas it succeeds using 7.1.1.

>>> import elasticsearch
>>> elasticsearch.__versionstr__
'7.5.1'
>>> elasticsearch.Elasticsearch().tasks.get()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/nfox/myenv-7.5.1/lib/python3.7/site-packages/elasticsearch/client/utils.py", line 84, in _wrapped
    return func(*args, params=params, **kwargs)
TypeError: get() missing 1 required positional argument: 'task_id'

>>> import elasticsearch
>>> elasticsearch.__versionstr__
'7.1.0'
>>> elasticsearch.Elasticsearch().tasks.get()
{'nodes': {'GkSSDiZPTBq4Tlv5xV9wtg': {'name': 'e6a01a4d549f', 'transport_address': '172.17.0.3:9300', 'host': '172.17.0.3', 'ip': '172.17.0.3:9300', 'roles': ['ingest', 'master', 'data', 'ml'], 'attributes': {'ml.machine_memory': '4129972224', 'xpack.installed': 'true', 'ml.max_open_jobs': '20'}, 'tasks': {'GkSSDiZPTBq4Tlv5xV9wtg:56': {'node': 'GkSSDiZPTBq4Tlv5xV9wtg', 'id': 56, 'type': 'direct', 'action': 'cluster:monitor/tasks/lists[n]', 'start_time_in_millis': 1582238526445, 'running_time_in_nanos': 8142200, 'cancellable': False, 'parent_task_id': 'GkSSDiZPTBq4Tlv5xV9wtg:55', 'headers': {}}, 'GkSSDiZPTBq4Tlv5xV9wtg:55': {'node': 'GkSSDiZPTBq4Tlv5xV9wtg', 'id': 55, 'type': 'transport', 'action': 'cluster:monitor/tasks/lists', 'start_time_in_millis': 1582238526442, 'running_time_in_nanos': 11192200, 'cancellable': False, 'headers': {}}}}}}

I’ve verified this against running both ES 7.5.1 and ES 7.1.1 (via docker on localhost)

Steps to reproduce: run elasticsearch.Elasticsearch().tasks.get() while using elasticsearch-py 7.5.1

Ultimately, this is breaking curator’s DeleteSnapshot as it checks for tasks.

[karmi]

@natefox , I’m just driving by, but if you want to get a list of tasks — ie. without an ID —, you should perhaps use the tasks.list API?

[natefox]

I think thats a fair approach while removing it for the 8.x.x release (at least moving to v8.0.0 conforms to semver’s concept of breaking changes).