calling var.replace_values(...) fails with 404 on .../table/?limit=0

[dmonroy]

It doesn't happen all the time and actually executing same code again after a failure (ie re-running a script) succeeds.

Logs in backend shows this: (thanks @malecki for sharing)

"POST /api/datasets/.../table/?limit=0 HTTP/1.0" 404 92 "" "pycrunch/0.4.11"

The post to /datasets/ is part of the replace_values method here:

scrunch/scrunch/datasets.py

Line 2380 in c857398

resp = self.resource.table.post(json.dumps(payload))

We are not passing the ?limit=0 querystring explicitly but perhaps that's implicit in self.resource.table as a side effect of setting that argument in scrunch.expressions.get_dataset_variables() function:

scrunch/scrunch/expressions.py

Lines 430 to 432 in f4830cb

	table = ds.follow("table", urlencode({
	'limit': 0
	}))

which is called from process_expr:

scrunch/scrunch/expressions.py

Line 465 in f4830cb

variables = get_dataset_variables(ds)

and process_expr is called from replace_values just before the post to table endpoint.

scrunch/scrunch/datasets.py

Lines 2377 to 2380 in c857398

	if filter:
	payload['filter'] = process_expr(parse_expr(filter), self.resource)
	resp = self.resource.table.post(json.dumps(payload))

But this is too much guessing, we need to find a way to make it reproducible.