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https://issues.apache.org/jira/browse/NIFI-7516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17129637#comment-17129637
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Matt Burgess commented on NIFI-7516:
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It may be more trouble than it is worth to detect a singular matrix ahead of
trying to make the predictions, I recommend just logging the issue at the debug
level
> Predictions model throws intermittent SingularMatrixExceptions
> --------------------------------------------------------------
>
> Key: NIFI-7516
> URL: https://issues.apache.org/jira/browse/NIFI-7516
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Reporter: Matt Burgess
> Priority: Major
>
> Under some circumstances, the Connection Status Analytics model (specifically
> the Ordinary Least Squares model) throws a SingularMatrix exception:
> org.apache.commons.math3.linear.SingularMatrixException: matrix is singular
> This can happen (usually intermittently) when the data points used to update
> the model form a matrix that has no inverse (i.e. singular).
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