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https://issues.apache.org/jira/browse/SPARK-32365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17160942#comment-17160942
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Apache Spark commented on SPARK-32365:
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User 'beliefer' has created a pull request for this issue:
https://github.com/apache/spark/pull/29161
> Fix java.lang.IndexOutOfBoundsException: No group -1
> ----------------------------------------------------
>
> Key: SPARK-32365
> URL: https://issues.apache.org/jira/browse/SPARK-32365
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.1, 3.1.0
> Reporter: jiaan.geng
> Priority: Major
>
> The current implement of regexp_extract will throws a unprocessed exception
> show below:
> SELECT regexp_extract('1a 2b 14m', 'd+' -1)
> {code:java}
> java.lang.IndexOutOfBoundsException: No group -1
> java.util.regex.Matcher.group(Matcher.java:538)
> org.apache.spark.sql.catalyst.expressions.RegExpExtract.nullSafeEval(regexpExpressions.scala:455)
> org.apache.spark.sql.catalyst.expressions.TernaryExpression.eval(Expression.scala:704)
> org.apache.spark.sql.catalyst.optimizer.ConstantFolding$$anonfun$apply$1$$anonfun$applyOrElse$1.applyOrElse(expressions.scala:52)
> org.apache.spark.sql.catalyst.optimizer.ConstantFolding$$anonfun$apply$1$$anonfun$applyOrElse$1.applyOrElse(expressions.scala:45)
> {code}
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