[jira] [Created] (MADLIB-1091) Linear regression fails in merge for groups with small number of rows

["Rahul Iyer (JIRA)" <ji...@apache.org>]

Rahul Iyer created MADLIB-1091:
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             Summary: Linear regression fails in merge for groups with small number of rows
                 Key: MADLIB-1091
                 URL: https://issues.apache.org/jira/browse/MADLIB-1091
             Project: Apache MADlib
          Issue Type: Bug
          Components: Module: Linear Regression
            Reporter: Rahul Iyer
             Fix For: v1.12


Issue reported by user: 
{quote}
Hi all! I'm trying to run madlib's linear regression on a table with a group by column for a client engagement. There are 44.5M distinct values in the group by column and 14 data points for each group by value. Each regression should be very simple since its only 14 points but I'm getting an error:

{code}
Function "madlib.linregr_merge_states(madlib.bytea8,madlib.bytea8) is improperly aligned for alignment request in seek()"
{code}

Tested it on a few rows and it worked. Any idea what might be causing this error or what this error means? 
{quote}



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