Frank McQuillan created MADLIB-1209:
---------------------------------------
Summary: Neural nets fails on Greenplum 4.3.x when verbose
argument set to TRUE
Key: MADLIB-1209
URL: https://issues.apache.org/jira/browse/MADLIB-1209
Project: Apache MADlib
Issue Type: Bug
Components: Module: Neural Networks
Reporter: Frank McQuillan
In
{code}
mlp_classification(
source_table,
output_table,
independent_varname,
dependent_varname,
hidden_layer_sizes,
optimizer_params,
activation,
weights,
warm_start,
verbose,
grouping_col
)
{code}
when the `verbose` argument is set to `TRUE` the following error results:
{code}
ERROR: plpy.SPIError: function array_length(double precision[], integer) does
not exist (plpython.c:4656)
LINE 4: _state_current[array_length(_sta...
^
HINT: No function matches the given name and argument types. You may need to
add explicit type casts.
QUERY:
SELECT
_state_current[array_length(_state_current,1)] AS
loss
,
__madlib_temp_col_grp_key29688300_1519168141_31322353__
FROM (
SELECT grp_key AS
__madlib_temp_col_grp_key29688300_1519168141_31322353__, state AS
_state_current FROM madlib._gen_state($3, NULL, $4)
) subq1
CONTEXT: Traceback (most recent call last):
PL/Python function "mlp_classification", line 33, in <module>
grouping_col
PL/Python function "mlp_classification", line 290, in mlp
PL/Python function "mlp_classification", line 455, in
get_param_value_per_group
PL/Python function "mlp_classification"
{code}
because `array_length` does not exist in Greenplum 4.3.x .
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