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feat: Support Spark expression str_to_map#3654

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unknowntpo wants to merge 3 commits intoapache:mainfrom
unknowntpo:feat-str-to-map-on-main
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feat: Support Spark expression str_to_map#3654
unknowntpo wants to merge 3 commits intoapache:mainfrom
unknowntpo:feat-str-to-map-on-main

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NOTE: This PR should not be merged until datafusion bumps to the release that has this commit apache/datafusion#20120

Which issue does this PR close?

Closes #3168

How are these changes tested?

SQL file tests in spark/src/test/resources/sql-tests/expressions/map/str_to_map.sql validate correctness against Spark's expected output via CometSqlFileTestSuite.

make test-jvm PROFILES="-Drat.skip=true -Dmaven.gitcommitid.skip=true \
    -Dsuites=org.apache.comet.CometSqlFileTestSuite" \
    MAVEN_OPTS="-Dmaven.gitcommitid.skip=true -Drat.skip=true"

unknowntpo and others added 3 commits March 9, 2026 20:44
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
@unknowntpo unknowntpo changed the title feat Support Spark expression str_to_map feat: Support Spark expression str_to_map Mar 10, 2026
@unknowntpo unknowntpo changed the title feat: Support Spark expression str_to_map feat: Support Spark expression str_to_map Mar 10, 2026
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[Feature] Support Spark expression: string_to_map

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