[BUG] Not found exception for class in org.apache.log4j.*

[jcamachor]

Willingness to contribute

Yes. I would be willing to contribute a fix for this bug with guidance from the OpenHouse community.

OpenHouse version

0.5.116

System information

• OS Platform and Distribution (e.g., Linux Ubuntu 20.0): Ubuntu 24.04 LTS
• JDK version: openjdk version "1.8.0_422"

Describe the problem

While trying to start Spark 3.1.1, e.g., the thrift server, we get a ClassNotFoundException (stacktrace below). It seems that the OpenHouse packaging does not rename org.apache.log4j dependencies in apps/spark/build.gradle, but there might be some constant references that cause the issue.

starting org.apache.spark.sql.hive.thriftserver.HiveThriftServer2, logging to /home/ohuser/spark/logs/spark-ohuser-org.apache.spark.sql.hive.thriftserver.HiveThriftServer2-1-oh-headnode.out
failed to launch: nice -n 0 bash /home/ohuser/spark/bin/spark-submit --class org.apache.spark.sql.hive.thriftserver.HiveThriftServer2 --name Thrift JDBC/ODBC Server --packages org.apache.iceberg:iceberg-azure:1.5.0,org.apache.iceberg:iceberg-spark-runtime-3.1_2.12:1.2.0 --jars openhouse-spark-apps_2.12-*-all.jar,openhouse-spark-runtime_2.12-latest-all.jar --conf spark.sql.catalog.openhouse=org.apache.iceberg.spark.SparkCatalog --conf spark.sql.catalog.openhouse.catalog-impl=com.linkedin.openhouse.spark.OpenHouseCatalog --conf spark.sql.extensions=org.apache.iceberg.spark.extensions.IcebergSparkSessionExtensions,com.linkedin.openhouse.spark.extensions.OpenhouseSparkSessionExtensions
    at org.apache.spark.internal.Logging.initializeLogIfNecessary$(Logging.scala:105)
    at org.apache.spark.deploy.SparkSubmit.initializeLogIfNecessary(SparkSubmit.scala:75)
    at org.apache.spark.deploy.SparkSubmit.doSubmit(SparkSubmit.scala:83)
    at org.apache.spark.deploy.SparkSubmit$$anon$2.doSubmit(SparkSubmit.scala:1030)
    at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:1039)
    at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
  Caused by: java.lang.ClassNotFoundException: openhouse/relocated/org.apache.log4j.Category
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    ... 15 more
full log in /home/ohuser/spark/logs/spark-ohuser-org.apache.spark.sql.hive.thriftserver.HiveThriftServer2-1-oh-headnode.out

Stacktrace, metrics and logs

No response

Code to reproduce bug

No response

What component does this bug affect?

• Table Service: This is the RESTful catalog service that stores table metadata. :services:tables
• Jobs Service: This is the job orchestrator that submits data services for table maintenance. :services:jobs
• Data Services: This is the jobs that performs table maintenance. apps:spark
• Iceberg internal catalog: This is the internal Iceberg catalog for OpenHouse Catalog Service. :iceberg:openhouse
• Spark Client Integration: This is the Apache Spark integration for OpenHouse catalog. :integration:spark
• Documentation: This is the documentation for OpenHouse. docs
• Local Docker: This is the local Docker environment for OpenHouse. infra/recipes/docker-compose
• Other: Please specify the component.