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https://issues.apache.org/jira/browse/SPARK-48284?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-48284:
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Labels: pull-request-available (was: )
> Fix UTF8String indexOf behaviour for empty string search
> --------------------------------------------------------
>
> Key: SPARK-48284
> URL: https://issues.apache.org/jira/browse/SPARK-48284
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 4.0.0
> Reporter: Uroš Bojanić
> Priority: Major
> Labels: pull-request-available
>
> Currently, UTF8String.indexOf returns 0 when given an empty parameters
> string, and any integer start value.
> Examples:
> {{"abc".indexOf("", 0); // returns: 0}}
> {{"abc".indexOf("", 2); // returns: 0}}
> {{"abc".indexOf("", 9); // returns: 0}}
> {{"abc".indexOf("", -3); // returns: 0}}
> This is not correct, as "start" is not taken into consideration.
> Correct behaviour would be:
> {{"abc".indexOf("", 0); // returns: 0}}
> {{"abc".indexOf("", 2); // returns: 2}}
> {{"abc".indexOf("", 9); // returns: -1}}
> {{"abc".indexOf("", -3); // returns: -1}}
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