Error when calling metrics-aggregator.py

[deligianp]

Calling metrics-aggregator.py for certain use cases raises the following error. The error was raised for executions of steps of a workflow but it can also be observed on the metrics that were tracked for a simple sleep command.

Steps to reproduce

execution-metrics-collector.py metrics_dir/ sleep 2
metrics-aggregator.py metrics_dir/2025_12_03-11_51-31136/ aggregated_metrics 85.0

Reported error

Traceback (most recent call last):
  File "/home/user/TREECRIPT/lib/python3.12/site-packages/networkx/classes/digraph.py", line 937, in successors
    return iter(self._succ[n])
                ~~~~~~~~~~^^^
KeyError: '1764759078.48_31136'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/user/TREECRIPT/bin/metrics-aggregator.py", line 24, in <module>
    main()
  File "/home/user/TREECRIPT/lib/python3.12/site-packages/treecript/aggregator.py", line 601, in main
    metrics_aggregator(
  File "/home/user/TREECRIPT/lib/python3.12/site-packages/treecript/aggregator.py", line 493, in metrics_aggregator
    for child_id in nx.descendants(pids_tree, node_id):
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/TREECRIPT/lib/python3.12/site-packages/networkx/utils/decorators.py", line 784, in func
    return argmap._lazy_compile(__wrapper)(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<class 'networkx.utils.decorators.argmap'> compilation 20", line 3, in argmap_descendants_17
  File "/home/user/TREECRIPT/lib/python3.12/site-packages/networkx/utils/backends.py", line 551, in _call_if_no_backends_installed
    return self.orig_func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/TREECRIPT/lib/python3.12/site-packages/networkx/algorithms/dag.py", line 72, in descendants
    return {child for parent, child in nx.bfs_edges(G, source)}
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/TREECRIPT/lib/python3.12/site-packages/networkx/algorithms/traversal/breadth_first_search.py", line 194, in bfs_edges
    yield from generic_bfs_edges(G, source, successors, depth_limit)
  File "/home/user/TREECRIPT/lib/python3.12/site-packages/networkx/algorithms/traversal/breadth_first_search.py", line 93, in generic_bfs_edges
    next_parents_children = [(source, neighbors(source))]
                                      ^^^^^^^^^^^^^^^^^
  File "/home/user/TREECRIPT/lib/python3.12/site-packages/networkx/classes/digraph.py", line 939, in successors
    raise NetworkXError(f"The node {n} is not in the digraph.") from err
networkx.exception.NetworkXError: The node 1764759078.48_31136 is not in the digraph.