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Clear Cache Fails (redis error)

See original GitHub issue

Description of the issue

Throws a redis error while clearing cache This is after updating to the latest versions mentioned below I had to edit frappe.desk.notifications.get_notification_config to return the value bypassing redis to get it working for now

Output of bench version

erpnext 12.1.7
frappe 12.0.17

Steps to reproduce the issue

Update to latest version
bench --site all clear-cache and clearing cache from within frappe ui causes this to be thrown

Stacktrace / full error message

Traceback (most recent call last):
  File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/faztp12/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 97, in <module>
    main()
  File "/home/faztp12/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 18, in main
    click.Group(commands=commands)(prog_name='bench')
  File "/home/faztp12/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/home/faztp12/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/home/faztp12/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/faztp12/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/faztp12/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/faztp12/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/home/faztp12/frappe-bench/env/lib/python3.6/site-packages/click/decorators.py", line 17, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/faztp12/frappe-bench/apps/frappe/frappe/commands/__init__.py", line 25, in _func
    ret = f(frappe._dict(ctx.obj), *args, **kwargs)
  File "/home/faztp12/frappe-bench/apps/frappe/frappe/commands/utils.py", line 48, in clear_cache
    frappe.clear_cache()
  File "/home/faztp12/frappe-bench/apps/frappe/frappe/__init__.py", line 566, in clear_cache
    frappe.cache_manager.clear_user_cache()
  File "/home/faztp12/frappe-bench/apps/frappe/frappe/cache_manager.py", line 31, in clear_user_cache
    clear_notifications(user)
  File "/home/faztp12/frappe-bench/apps/frappe/frappe/desk/notifications.py", line 120, in clear_notifications
    config = get_notification_config()
  File "/home/faztp12/frappe-bench/apps/frappe/frappe/desk/notifications.py", line 198, in get_notification_config
    return frappe.cache().hget("notification_config", frappe.session.user, _get)
  File "/home/faztp12/frappe-bench/apps/frappe/frappe/utils/redis_wrapper.py", line 172, in hget
    value = super(RedisWrapper, self).hget(_name, key)
  File "/home/faztp12/frappe-bench/env/lib/python3.6/site-packages/redis/client.py", line 1963, in hget
    return self.execute_command('HGET', name, key)
  File "/home/faztp12/frappe-bench/env/lib/python3.6/site-packages/redis/client.py", line 668, in execute_command
    return self.parse_response(connection, command_name, **options)
  File "/home/faztp12/frappe-bench/env/lib/python3.6/site-packages/redis/client.py", line 680, in parse_response
    response = connection.read_response()
  File "/home/faztp12/frappe-bench/env/lib/python3.6/site-packages/redis/connection.py", line 629, in read_response
    raise response
redis.exceptions.ResponseError: WRONGTYPE Operation against a key holding the wrong kind of value

Additional information

Ubuntu 18.04 Frappe Manual Installation

Issue Analytics

State:
Created 4 years ago
Comments:11 (6 by maintainers)

Top GitHub Comments

4reactions

Thunderbottomcommented, Oct 25, 2019

a workaround for this would be to flush the redis cache through the console for now:

frappe.cache().flushall()

1reaction

Thunderbottomcommented, Nov 27, 2019

Well, to be honest, it wont necessarily happen to all the servers. There’s one thing we can do to gracefully clear the cache. Let me look into it.

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