cxcscmu/skilllearnbench/maven-druid-build

Name: maven-druid-build
Author: cxcscmu

Trust tier 3

community

By cxcscmu
Design
cxcscmu/skilllearnbench
skills/b1-one-shot-claude-haiku-4-5/fix-security-bug/maven-druid-build/SKILL.md
Updated 7 Oct 2026
Version 1.0.01 version recorded

Source check pending

Checking that the SKILL.md file is still in the repository.

Building Apache Druid with Maven, managing memory constraints, and skipping verification checks.

Install

npx vskill@latest install cxcscmu/skilllearnbench/maven-druid-build

SKILL.md

The same SKILL.md was published earlier as majiayu000/claude-skill-registry-data/maven-druid-build.

Maven Build for Apache Druid

Build Command Reference

Full Build (from instructions)

bash

cd /root/druid
mvn clean package \
  -DskipTests \
  -Dcheckstyle.skip=true \
  -Dpmd.skip=true \
  -Dforbiddenapis.skip=true \
  -Dspotbugs.skip=true \
  -Danimal.sniffer.skip=true \
  -Denforcer.skip=true \
  -Djacoco.skip=true \
  -Ddependency-check.skip=true \
  -pl '!web-console' \
  -pl indexing-service \
  -am

Flag Explanations

Flag	Purpose
`clean`	Remove previous build artifacts
`package`	Compile and package into JAR/WAR
`-DskipTests`	Skip unit test execution
`-Dcheckstyle.skip=true`	Skip code style checking
`-Dpmd.skip=true`	Skip PMD analysis
`-Dforbiddenapis.skip=true`	Skip forbidden API checking
`-Dspotbugs.skip=true`	Skip SpotBugs (FindBugs) analysis
`-Danimal.sniffer.skip=true`	Skip JDK version compatibility checks
`-Denforcer.skip=true`	Skip Maven Enforcer rules
`-Djacoco.skip=true`	Skip code coverage analysis
`-Ddependency-check.skip=true`	Skip OWASP dependency checking
`-pl '!web-console'`	Exclude web-console module (memory constraint)
`-pl indexing-service`	Include indexing-service module
`-am`	Also make dependencies of selected projects

Memory Management

Memory Issues

If you encounter OOM (Out of Memory) errors:

bash

# Increase heap size
export MAVEN_OPTS="-Xmx2g -Xms1g"
 
# Very aggressive heap limit
export MAVEN_OPTS="-Xmx1g -Xms512m"

Parallel Builds

To speed up builds with multiple cores:

bash

mvn clean package -T 1C  # 1 thread per core

Output Artifacts

After successful build:

druid/indexing-service/target/druid-indexing-service-0.20.0-SNAPSHOT.jar
druid/distribution/target/apache-druid-0.20.0-SNAPSHOT/lib/

Verifying Build

bash

# Check if JAR was created
ls -la indexing-service/target/*.jar
 
# Check build log for errors
tail -100 build.log
 
# Verify specific file was included
jar tf indexing-service/target/*.jar | grep "JavaScriptFilter"

Maven Troubleshooting

Module Not Found

bash

# Verify module exists
ls -la indexing-service/pom.xml
 
# Rebuild parent projects
mvn clean install -pl '!web-console'

Compilation Errors

bash

# Detailed error output
mvn clean package -X 2>&1 | tail -50
 
# Compile only (no packaging)
mvn clean compile

Selective Compilation

bash

# Build specific module and dependencies
mvn clean package -pl indexing-service -am
 
# Build without tests but with other checks
mvn clean package -DskipTests
 
# Minimal build for testing
mvn clean package -DskipTests -Denforcer.skip=true

Security

Security scanPassed, 100 of 100Pattern checks on the skill's files.
Model reviewPassed

See the full security report

Quality evaluation

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See evaluation results

Source

SKILL.md in the repositoryCheckingskills/b1-one-shot-claude-haiku-4-5/fix-security-bug/maven-druid-build/SKILL.md

Popularity

Repository stars: 83
Repository forks: 7
7-day trend score: 27

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