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https://issues.apache.org/jira/browse/RAT-575?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dejan Stojadinović updated RAT-575:
-----------------------------------
Environment:
# *JDK:* 25.0.4
# *RAT:* 0.17 / 0.18
# Gradle plugin *org.nosphere.apache.rat* versions 0.10.0 / 0.11.0
#* note: these Gradle plugin versions are using RAT 0.17 / 0.18 (respectively):
[https://github.com/eskatos/creadur-rat-gradle/blob/v0.11.0/CHANGELOG.md]
was:
*JDK:* 25.0.4
*RAT:* 0.17 / 0.18
Gradle plugin *org.nosphere.apache.rat* versions 0.10.0 / 0.11.0
* note: these Gradle plugin versions are using RAT 0.17 / 0.18 (respectively):
[https://github.com/eskatos/creadur-rat-gradle/blob/v0.11.0/CHANGELOG.md]
> [Regression] Slower RAT task execution with recent versions (0.17 and 0.18)
> ---------------------------------------------------------------------------
>
> Key: RAT-575
> URL: https://issues.apache.org/jira/browse/RAT-575
> Project: Apache RAT
> Issue Type: Task
> Components: core engine
> Affects Versions: 0.17, 0.18
> Environment: # *JDK:* 25.0.4
> # *RAT:* 0.17 / 0.18
> # Gradle plugin *org.nosphere.apache.rat* versions 0.10.0 / 0.11.0
> #* note: these Gradle plugin versions are using RAT 0.17 / 0.18
> (respectively):
> [https://github.com/eskatos/creadur-rat-gradle/blob/v0.11.0/CHANGELOG.md]
> Reporter: Dejan Stojadinović
> Priority: Major
> Labels: Regression, regresion, slowness
>
> *Problem description:*
> # it started after attempted version upgrade from *RAFT 0.15 to 0.17* (via
> Gradle Rat plugin version upgrade here:
> [https://github.com/apache/kafka/pull/23424#issuecomment-5633077550):] *RAT
> task execution time was increased exponentially (25 times)*
> # plugin developer [~eskatos] was extra responsive:
> [https://github.com/eskatos/creadur-rat-gradle/issues/37#issuecomment-5630452783]
> # *RAT 0.18* task execution time is better comparing to 0.17 (but nowhere
> near to 0.15)
> (on) Note: I can provide Gradle Develocity build results scans.
> *Environment:*
> * *Gradle RAT plugin versions / RAT versions:*
> ** plugin version 0.8.1 / RAT version 0.15 (baseline, i.e. Kafka trunk)
> ** plugin version 0.10.0 / RAT version 0.17
> ** plugin version 0.11.0 / RAT version 0.18
> * *Gradle (wrapper) version: 9.7.1*
> * *JDK: 25.0.4*
> {code:java}
> openjdk version "25.0.4" 2026-07-21 LTS
> OpenJDK Runtime Environment Temurin-25.0.4+7 (build 25.0.4+7-LTS)
> OpenJDK 64-Bit Server VM Temurin-25.0.4+7 (build 25.0.4+7-LTS, mixed mode,
> sharing)
> {code}
> * {*}POC{*}: [https://github.com/apache/kafka/pull/23424]
> {code:java}
> dejan@home:~/kafka$ git log -3 --oneline
> 2575547fcff (HEAD -> KAFKA-21064, origin/KAFKA-21064) KAFKA-21064 plugin
> version bumped to 0.11.0 (in order to use Apache RAT bundled version 0.18)
> 6b28f8c39d6 KAFKA-21064 Apache RAT Gradle plugin version upgrade: 0.8.1 -->
> 0.10.0; redundant custom style file is removed
> 7a09196f933 KAFKA-20745: extend OffsetMapTest to verify different hash
> algorithms (#23391)
> dejan@home:~/kafka$
> {code}
> *Test scenario:* execute: *./gradlew rat --rerun --profile* three times (once
> per each commit mentioned above).
> *Test results:*
> |commit|gradle RAT plugin/RAT version|RAT task execution time|
> |Kafka trunk|plugin 0.8.1 (RAT 0.15)|2.553s|
> |PR 1st commit|plugin 0.10.0 (RAT 0.17)|50.816s|
> |PR 2nd commit|plugin 0.11.0 (RAT 0.18)|26.125s|
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