ray-wait-tips5.py

iteration: 1
Ready length, values:  2 [5, 10]
Not Ready length: 3
iteration: 2
Ready length, values:  2 [15, 20]
Not Ready length: 1
---------------------------------------------------------------------------
Exception                                 Traceback (most recent call last)
<ipython-input-7-a3a41a1b0002> in <module>
      1 ids = [busy.remote(i) for i in times]  # New set of ids
      2 for i in range(1,40):
----> 3     ready, not_ready = ray.wait(ids, num_returns = 2)
      4     print('iteration:', i)
      5     print('Ready length, values: ', len(ready), ray.get(ready))

~/anaconda3/envs/ray/lib/python3.7/site-packages/ray/worker.py in wait(object_ids, num_returns, timeout)
   2262                 "Invalid number of objects to return %d." % num_returns)
   2263         if num_returns > len(object_ids):
-> 2264             raise Exception("num_returns cannot be greater than the number "
   2265                             "of objects provided to ray.wait.")
   2266 

Exception: num_returns cannot be greater than the number of objects provided to ray.wait.