[jira] [Resolved] (SPARK-56258) Make MetricUtils.stringValue lenient for unknown metric types

["Kent Yao (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-56258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kent Yao resolved SPARK-56258.
------------------------------
    Fix Version/s: 4.2.0
       Resolution: Fixed

Issue resolved by pull request 55060
[https://github.com/apache/spark/pull/55060]

> Make MetricUtils.stringValue lenient for unknown metric types
> -------------------------------------------------------------
>
>                 Key: SPARK-56258
>                 URL: https://issues.apache.org/jira/browse/SPARK-56258
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 4.2.0
>            Reporter: Kent Yao
>            Assignee: Kent Yao
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.2.0
>
>
> MetricUtils.stringValue throws SparkException.internalError on unknown metric types, which is over-defensive for a UI rendering function. A crash at display time is worse than showing a degraded metric.
> Change to best-effort rendering: log at DEBUG level and format as '[unknown] N' with NumberFormat. This also enables downstream projects (Gluten, Comet) to define custom metric types without Spark core throwing.



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