[SPARK-39758] NPE on invalid patterns from the regexp functions

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.3.0
• Fix Version/s: 3.2.2, 3.3.1, 3.4.0
• Component/s: SQL
• Assignee: Max Gekk
• Reporter: Max Gekk
• Created: 13/Jul/22 06:30
• Updated: 14/Jul/22 14:50
• Resolved: 13/Jul/22 14:10

Description

The example below reproduces the issue:

spark-sql> SELECT regexp_extract('1a 2b 14m', '(?l)');
22/07/12 19:07:21 ERROR SparkSQLDriver: Failed in [SELECT regexp_extract('1a 2b 14m', '(?l)')]
java.lang.NullPointerException: null
	at org.apache.spark.sql.catalyst.expressions.RegExpExtractBase.getLastMatcher(regexpExpressions.scala:768) ~[spark-catalyst_2.12-3.3.0.jar:3.3.0]

Issue Links

• links to: [Github] Pull Request #37171 (MaxGekk)
• links to: [Github] Pull Request #37181 (MaxGekk)
• links to: [Github] Pull Request #37181 (MaxGekk)
• links to: [Github] Pull Request #37182 (MaxGekk)
• links to: [Github] Pull Request #37182 (MaxGekk)