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Recursively large parameters

See original GitHub issue

This is recursion.

https://github.com/m3dev/gokart/blob/master/gokart/task.py#L285-L303

self.to_str_params(only_significant=True) append the result of the json serialization of the parameter. As a result of repeated json serialization, we have the following in dependencies.

dependencies.append(self.to_str_params(only_significant=True))

\“params\”: {\“target\”: \“{\\\“type\\\”: \\\“task.Aggregation\\\”, \\\“params\\\”: {\\\“train\\\”: \\\”{\\\\\\\“type\\\\\\\”: \\\\\\\“task.Sample\\\\\\\”, \\\\\\\“params\\\\\\\”: {\\\\\\\“target\\\\\\\”: \\\\\\\“{\\\\\\\\\\\\\\\“type\\\\\\\\\\\\\\\”: \\\\\\\\\\\\\\\“task.Query\\\\\\\\\\\\\\\”, \\\\\\\\\\\\\\\“params\\\\\\\\\\\\\\\”: {\\\\\\\\\\\\\\\“target\\\\\\\\\\\\\\\”: \\\\\\\\\\\\\\\”{\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\“type\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”: \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\“task.Add\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”, \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\“params\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”: {\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\“target\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”: \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"{\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\“type\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”: \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\“task.Drop\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”,

Gokart use a lot of memory when long pipeline. And the job is starting very slowly.