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perf: Optimize string split functions and avoid intermediate heap allocations - #5416

#5416

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kazantsev-maksim wants to merge 80 commits into

apache:mainapache/datafusion-comet:mainfrom

kazantsev-maksim:perf_splitkazantsev-maksim/datafusion-comet:perf_splitCopy head branch name to clipboard

Conversation Commits80 (80)Checks Files changed

Open

perf: Optimize string split functions and avoid intermediate heap allocations#5416
kazantsev-maksim wants to merge 80 commits into
apache:mainfrom
kazantsev-maksim:perf_split

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4a2e50f

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PR Build (Linux) / Lint Java (Spark 4.0, JDK 17)

PR Build (Linux) / Lint Java (Spark 4.0, JDK 21)

PR Build (Linux) / Build Spark 4.1, JDK 17

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PR Build (Linux) / ubuntu-latest/rust-test

PR Build (Linux) / Spark 3.4, JDK 11, Scala 2.12 [scans]

PR Build (Linux) / Spark 3.4, JDK 11, Scala 2.12 [shuffle]

PR Build (Linux) / Spark 3.4, JDK 11, Scala 2.12 [exec]

PR Build (Linux) / Spark 3.4, JDK 11, Scala 2.12 [expressions]

PR Build (Linux) / Spark 3.5, JDK 17, Scala 2.13 [scans]

PR Build (Linux) / Spark 3.5, JDK 17, Scala 2.13 [shuffle]

PR Build (Linux) / Spark 3.5, JDK 17, Scala 2.13 [exec]

PR Build (Linux) / Spark 3.5, JDK 17, Scala 2.13 [expressions]

PR Build (Linux) / Spark 4.0, JDK 21 [scans]

PR Build (Linux) / Spark 4.0, JDK 21 [shuffle]

PR Build (Linux) / Spark 4.0, JDK 21 [exec]

PR Build (Linux) / Spark 4.0, JDK 21 [expressions]

PR Build (Linux) / Spark 4.1, JDK 17 [scans]

PR Build (Linux) / Spark 4.1, JDK 17 [shuffle]

PR Build (Linux) / Spark 4.1, JDK 17 [exec]

PR Build (Linux) / Spark 4.1, JDK 17 [expressions]

PR Build (Linux) / Spark 4.2, JDK 17 [scans]

PR Build (Linux) / Spark 4.2, JDK 17 [shuffle]

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PR Build (macOS) / macos-14/Spark 4.0, JDK 17, Scala 2.13 [scans]

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PR Build (macOS) / macos-14/Spark 4.0, JDK 17, Scala 2.13 [exec]

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Spark SQL Tests (Spark 3.4)

Spark SQL Tests (Spark 3.5) / Build Native + JVM Test Classes

Spark SQL Tests (Spark 3.5) / spark-sql-catalyst/spark-3.5.9-jdk17

Spark SQL Tests (Spark 3.5) / spark-sql-sql_core-1/spark-3.5.9-jdk17

Spark SQL Tests (Spark 3.5) / spark-sql-sql_core-2/spark-3.5.9-jdk17

Spark SQL Tests (Spark 3.5) / spark-sql-sql_core-3/spark-3.5.9-jdk17

Spark SQL Tests (Spark 3.5) / spark-sql-sql_hive-1/spark-3.5.9-jdk17

Spark SQL Tests (Spark 3.5) / spark-sql-sql_hive-2/spark-3.5.9-jdk17

Spark SQL Tests (Spark 3.5) / spark-sql-sql_hive-3/spark-3.5.9-jdk17

Spark SQL Tests (Spark 3.5) / merge-fallback-logs

Spark SQL Tests (Spark 4.0)

Spark SQL Tests (Spark 4.1) / Build Native + JVM Test Classes

Spark SQL Tests (Spark 4.1) / spark-sql-catalyst/spark-4.1.3-jdk17

Spark SQL Tests (Spark 4.1) / spark-sql-sql_core-1/spark-4.1.3-jdk17

Spark SQL Tests (Spark 4.1) / spark-sql-sql_core-2/spark-4.1.3-jdk17

Spark SQL Tests (Spark 4.1) / spark-sql-sql_core-3/spark-4.1.3-jdk17

Spark SQL Tests (Spark 4.1) / spark-sql-sql_hive-1/spark-4.1.3-jdk17

Spark SQL Tests (Spark 4.1) / spark-sql-sql_hive-2/spark-4.1.3-jdk17

Spark SQL Tests (Spark 4.1) / spark-sql-sql_hive-3/spark-4.1.3-jdk17

Spark SQL Tests (Spark 4.1) / merge-fallback-logs

Iceberg Spark SQL Tests (Iceberg 1.8)

Iceberg Spark SQL Tests (Iceberg 1.9)

Iceberg Spark SQL Tests (Iceberg 1.10)

Iceberg Spark SQL Tests (Iceberg 1.11) / Build Native Library

Iceberg Spark SQL Tests (Iceberg 1.11) / iceberg-spark/iceberg-1.11.0/spark-4.1.3/scala-2.13/java-17

Iceberg Spark SQL Tests (Iceberg 1.11) / iceberg-spark-extensions/iceberg-1.11.0/spark-4.1.3/scala-2.13/java-17

Iceberg Spark SQL Tests (Iceberg 1.11) / iceberg-spark-runtime/iceberg-1.11.0/spark-4.1.3/scala-2.13/java-17

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Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/setup-java@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

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setup-java v4 is deprecated and will no longer receive updates. Please migrate to actions/setup-java@v5.

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