[jira] [Updated] (SPARK-58842) Add descriptive messages to bare require checks in ALS

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-58842?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated SPARK-58842:
-----------------------------------
    Labels: pull-request-available  (was: )

> Add descriptive messages to bare require checks in ALS
> ------------------------------------------------------
>
>                 Key: SPARK-58842
>                 URL: https://issues.apache.org/jira/browse/SPARK-58842
>             Project: Spark
>          Issue Type: Improvement
>          Components: ML
>    Affects Versions: 4.3.0
>            Reporter: Uroš Bojanić
>            Priority: Major
>              Labels: pull-request-available
>
> ALS has 14 bare require(...) checks with no message, so when one trips it produces only 'requirement failed', giving no indication of which invariant broke in a long-running factorization job. Examples: require(c >= 0.0), require(a.length == k), require(blockId < numBlocks).
> This adds a short message to each, naming the values involved, e.g. require(c >= 0.0, s"Observation weight must be non-negative but found $c."). The file already establishes the pattern with require(numBlocks > 0, s"numBlocks must be positive but found $numBlocks.").
> Conditions and exception types are unchanged; only message text is added. This mirrors SPARK-58621, which did the same for SummarizerBuffer.



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