[VL] Spark 4.1: Velox split function returns incorrect results with limit parameter (SPARK-49968)

[baibaichen]

Backend

VL (Velox)

Bug description

split('hello', '', 1) returns ["h"] in Velox but should return ["hello"]. This is a Velox C++ re2-based split implementation issue when the limit parameter is specified. Spark 4.1 added the limit parameter test via SPARK-49968.

Spark 4.1 only.

Parent issue: #11550

Impact

Suite / Item	Status	spark40	spark41
GlutenCollationRegexpExpressionsSuite	Entire suite TODO (1 failure)	🟢	🔴
GlutenRegexpExpressionsSuite	.exclude("SPLIT")	🟢	🔴
VeloxStringFunctionsSuite	testWithSpecifiedSparkVersion skips 4.x	🟢	🔴

References

• Apache Spark JIRA: SPARK-49968