[VL] Call Iceberg Function from pyspark failed

[FelixYBW]

Backend

VL (Velox)

Bug description

spark.sql('''
CALL spark_catalog.system.register_table(
  table => 'tpcds_sf10000.web_site',
  metadata_file => 's3://perf/072326/web_site/metadata/00006-1c62dede-52e1-460c-8fe3-0a218955660f.metadata.json'
  )'''
)

error:

ParseException: 
[PARSE_SYNTAX_ERROR] Syntax error at or near 'CALL'.(line 1, pos 0)

== SQL ==
CALL spark_catalog.system.register_table(
^^^
  table => 'tpcds_sf10000_parquet_zstd_part_248_20260623_072326.call_center',
  metadata_file => 's3://perf-pipeline-ice-east1/sk/10tb_248_20260623_072326/aws_tpcds_ice_sf10000_part_248_20260623_072326/call_center/metadata/00008-2570f299-d610-4262-ace2-01b2803022e3.metadata.json'
)

Odd issue

Gluten version

No response

Spark version

None

Spark configurations

No response

System information

No response

Relevant logs

[zhouyuan]

@infvg could you please take a look?

[infvg]

Raised #12823

[infvg]

@FelixYBW this issue is due to the config spark.sql.extensions missing org.apache.iceberg.spark.extensions.IcebergSparkSessionExtensions