Maximum Recursion Depth, when creating rapids string

[exalate-issue-sync]

Hi!

This ticket is the follow-up ticket to: https://h2oai.atlassian.net/browse/PUBDEV-8960
(The old bug-ticket can be deleted).

The Dataset I am using has the following structure:
time,(CH20 MIN) Flow Speed (m/s),...,(CH24 SAMPLE COUNT) Conductivity,id,classes
(36 columns, time series, name=paradox dataset)

---

This is my code, which causes the error (shortened):

{code:python}

def jifa():
// x_test is a pandas dataframe
features = create_features(x_test, column_id=automl_model.params.get('column_id'),
column_value=automl_model.params.get('column_value'),
column_kind=automl_model.params.get('column_kind'),
column_sort=automl_model.params.get('column_sort'),
settings=automl_model.feature_settings)

    features = convert_h2oframe_to_numeric(features, features.columns)
    *y_pre = automl_model.model.predict(features)['predict'].as_data_frame()*
    // This line triggers the error in h20

def create_features(data, column_id=None, column_value=None, column_kind=None,
settings=None):
"""Load features."""
//extract_features is a method from ts-fresh to extract important features.
features = extract_features(data, column_id=column_id,
column_value=column_value,
column_kind=column_kind,
kind_to_fc_parameters=settings,
impute_function=impute)
features = h2o.H2OFrame(features).drop([0], axis=0)
return features
{code}

---

The traceback in h20 is the following:

{panel:title=Traceback in h20}
File “/src/model_selection/model_selection.py”, line 79, in compute_metrics y_pre = automl_model.model.predict(features)['predict'].as_data_frame() {color:#14892c}<-- Still my code{color}

File "/usr/local/lib/python3.8/site-packages/h2o/model/model_base.py", line 280, in predict j = H2OJob(h2o.api("POST /4/Predictions/models/%s/frames/%s" % (self.model_id, test_data.frame_id), data = {'custom_metric_func': custom_metric_func}),

File "/usr/local/lib/python3.8/site-packages/h2o/frame.py", line 415, in frame_id return self._frame()._ex._cache._id

File "/usr/local/lib/python3.8/site-packages/h2o/frame.py", line 735, in _frame self._ex._eager_frame()

File "/usr/local/lib/python3.8/site-packages/h2o/expr.py", line 90, in _eager_frame self._eval_driver('frame')

File "/usr/local/lib/python3.8/site-packages/h2o/expr.py", line 113, in _eval_driver exec_str = self._get_ast_str(top)

File "/usr/local/lib/python3.8/site-packages/h2o/expr.py", line 151, in _get_ast_str exec_str = "({} {})".format(self._op, " ".join([ExprNode._arg_to_expr(ast) for ast in self._children]))

File "/usr/local/lib/python3.8/site-packages/h2o/expr.py", line 151, in exec_str = "({} {})".format(self._op, " ".join([ExprNode._arg_to_expr(ast) for ast in self._children]))

{color:#14892c}Afterwards it reaches the maximum recursion depth. It jumps back and forth between the mehtodes, until the mrd.{color}
{panel}

---

If the _children of the ExpressionNode consist only out of ExpressionNodes and their children as well. Then it jumps between those mehtodes until the maximum recursion depth.

---

It is related to this ticket, which tries to replace the recursive build:
https://h2oai.atlassian.net/browse/PUBDEV-8252

(This would solve the problem.)

If the _children of the ExpressionNode consist only out of ExpressionNodes and their children as well. Then it jumps between the methodes __arg_to_expr() _and _get_ast_str()

---

I cannot upload the dataset to this bug-ticket, please send a mail to: [mailto:jakobkempter@gmail.com]. And I'll send the dataset to you.

[exalate-issue-sync]

Jakob Kempter commented: After creating an account, I can upload files. This is the dataset, which is causing the error.

[^data.csv]

[exalate-issue-sync]

Wendy Wong commented: Here is the description of the original ticket:

When performing the def _arg_to_expr(arg): in expr.py

If the _children of the ExpressionNode consists only out of ExpressionNodes and their children as well.

A maximum recursion depth is reached and the program crashes.

Why do I reach this maximum recursion depth? Is it caused by my dataset, my extracted features?

[h2o-ops]

JIRA Issue Details

Jira Issue: PUBDEV-8961
Assignee: Sebastien Poirier
Reporter: N/A
State: Open
Fix Version: N/A
Attachments: Available (Count: 1)
Development PRs: N/A

[h2o-ops]

Attachments From Jira

Attachment Name: data.csv
Attached By: Jakob Kempter
File Link:https://h2o-3-jira-github-migration.s3.amazonaws.com/PUBDEV-8961/data.csv