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https://issues.apache.org/jira/browse/MADLIB-1091?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16122543#comment-16122543
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Cooper Sloan commented on MADLIB-1091:
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Can you give the database version and madlib version please?
> 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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