[IMPALA-10198] Unify Java components into a single maven project

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 4.0.0
• Fix Version/s: Impala 4.0.0
• Component/s: Infrastructure
• Epic Color: ghx-label-7
• Assignee: Joe McDonnell
• Reporter: Joe McDonnell
• Created: 29/Sep/20 16:31
• Updated: 09/Jun/22 07:40
• Resolved: 19/Oct/20 15:57

Description

Currently, there are multiple maven projects in Impala's source. Each one is built separately with a separate maven invocation, while sharing a parent pom (impala-parent/pom.xml). This requires artificial CMake dependencies to avoid concurrent maven invocations (e.g. https://github.com/apache/impala/commit/4c3f701204f92f8753cf65a97fe4804d1f77bc08). 

We should unify the Java projects into a single project with submodules. This will allow a single maven invocation. This makes it easier to add new Java submodules, and it fixes the "mvn versions:set" command.

Issue Links

• fixes: IMPALA-8670 Restructure Impala Maven projects
• is related to: IMPALA-9285 Maven compile error on testdata module