Nikhil created MADLIB-1231:
------------------------------
Summary: Exception in correlation/covariance when mean of a column
is null
Key: MADLIB-1231
URL: https://issues.apache.org/jira/browse/MADLIB-1231
Project: Apache MADlib
Issue Type: Bug
Components: Module: Inferential Statistics
Reporter: Nikhil
Fix For: v1.15
While working on https://issues.apache.org/jira/browse/MADLIB-1128, we found a
bug in the correlation/covariance module.
Repro steps:
{code}
create table foo(i int , j int);
insert into foo values(1,NULL);
madlib=# select madlib.correlation('foo','foo_out');
ERROR: plpy.SPIError: Function "madlib.correlation_transition(double
precision[],double precision[],double precision[])": Correlation: Mean vector
contains NULL. (UDF_impl.hpp:210) (entry db 127.0.0.1:15432 pid=46000)
CONTEXT: Traceback (most recent call last):
PL/Python function "correlation", line 23, in <module>
return correlation.correlation(**globals())
PL/Python function "correlation", line 71, in correlation
PL/Python function "correlation", line 207, in _populate_output_table
PL/Python function "correlation"
madlib=#
{code}
This was introduced in https://issues.apache.org/jira/browse/MADLIB-1166 when
we started supporting null values.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
