majiayu000/claude-skill-registry-data/maven-druid-build

Name: maven-druid-build
Author: majiayu000

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

Install

npx vskill@latest install majiayu000/claude-skill-registry-data/maven-druid-build

SKILL.md

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

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Source

SKILL.md in the repositoryCheckingdevelopment/maven-druid-build/SKILL.md

Popularity

Repository stars: 23
Repository forks: 9
7-day trend score: 21

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