Fixes KeyError
for get_two_hop_neighbors
when called with a small start vertices list
#3778
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closes #3745
This PR adds updates to replace the
get_distributed_data()
call withpersist_dask_df_equal_parts_per_worker()
andget_persisted_df_worker_map()
to avoid a problem whereget_distributed_data()
does not distribute data properly across all workers. This resulted in aKeyError
when the data was accessed via worker, when that worker was not a key in the map.More details are in the linked issue.
This PR also does minor refactoring in
get_two_hop_neighbors()
and reorganizes the imports according to PEP 8.Tested manually on a 4-GPU system, where the problem described in #3745 was reproduced, the change in the PR applied and re-run, and the error no longer occurring.