malinjawi opened a new issue, #12912:
URL: https://github.com/apache/gluten/issues/12912

   ### Backend
   
   VL (Velox)
   
   ### Bug description
   
   After #12823, Gluten automatically enables `IcebergSparkSessionExtensions` 
whenever Iceberg is on the classpath.
   
   This affects every Spark session, including non-Iceberg DataSource V2 
tables. With Spark 3.5 and Iceberg 1.10.0, Iceberg's row-lineage rules can 
throw a `MatchError` during `UPDATE` and `MERGE`. The Iceberg parser can also 
unexpectedly wrap other configured parsers.
   
   Expected behavior: Iceberg extensions should only be enabled when explicitly 
configured by an Iceberg application.
   
   Suggested fix:
   
   1. Stop registering the Iceberg extension globally.
   2. Configure it explicitly in Iceberg tests and applications.
   3. Add the Iceberg runtime to the `gluten-ut` Iceberg profile.
   
   Community CI missed this because the Iceberg runtime was not on the 
`gluten-ut` test classpath, so the Iceberg component remained inactive.
   
   
   ### Gluten version
   
   main branch
   
   ### Spark version
   
   Spark-3.5.x
   
   ### Spark configurations
   
   spark.plugins=org.apache.gluten.GlutenPlugin
   Iceberg runtime 1.10.0 is present on the classpath
   
   ### System information
   
   _No response_
   
   ### Relevant logs
   
   ```bash
   scala.MatchError:
   org.apache.spark.sql.connector.catalog.InMemoryRowLevelOperationTable
     at 
org.apache.spark.sql.catalyst.analysis.RewriteOperationForRowLineage.shouldUpdatePlan
     at 
org.apache.spark.sql.catalyst.analysis.RewriteMergeIntoTableForRowLineage.apply
   ```


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