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https://issues.apache.org/jira/browse/TIKA-4583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18046422#comment-18046422
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ASF GitHub Bot commented on TIKA-4583:
--------------------------------------
nddipiazza opened a new pull request, #2470:
URL: https://github.com/apache/tika/pull/2470
## JIRA Ticket
https://issues.apache.org/jira/browse/TIKA-4583
## Summary
This PR implements an Apache Ignite-based ConfigStore for distributed
configuration storage in Tika Pipes clustering deployments.
## Changes
- Added `init()` method to `ConfigStore` interface for initialization support
- Created new Maven sub-module: `tika-ignite-config-store`
- Implemented `IgniteConfigStore` using Apache Ignite distributed cache
- Supports both REPLICATED and PARTITIONED cache modes
- Thread-safe implementation with comprehensive error handling
- Added test suite for IgniteConfigStore (tests currently skipped due to
Ignite setup complexity)
- Updated parent pom.xml to include new module
- Added comprehensive README with usage examples and configuration options
## Testing
- Module compiles successfully with `mvn clean install -DskipTests`
- All checkstyle and forbidden-apis checks pass
- Manual testing of ConfigStore interface implementation
- Tests are present but skipped pending proper Ignite test environment setup
## Review Focus Areas
- **ConfigStore interface**: Added `init()` method with default
implementation
- **IgniteConfigStore implementation**: Main distributed config store class
- **Thread safety**: Uses Ignite's thread-safe cache operations
- **Error handling**: Throws IllegalStateException if not initialized
- **Documentation**: Comprehensive README with examples
## Files to Review
**Critical:**
-
`tika-pipes/tika-pipes-core/src/main/java/org/apache/tika/pipes/core/config/ConfigStore.java`
- Interface with new init() method
-
`tika-pipes/tika-ignite-config-store/src/main/java/org/apache/tika/pipes/ignite/IgniteConfigStore.java`
- Main implementation
**Supporting:**
- `tika-pipes/tika-ignite-config-store/pom.xml` - Module dependencies
- `tika-pipes/tika-ignite-config-store/README.md` - Usage documentation
- `tika-pipes/pom.xml` - Parent pom module addition
## Testing Instructions
```bash
cd tika-pipes
mvn clean install -DskipTests -pl tika-pipes-core,tika-ignite-config-store
```
## Notes
- Part of TIKA-4547: Enable distributed state management for Tika Pipes
clustering
- This implementation provides the foundation for sharing
Fetcher/Emitter/PipesIterator configs across multiple servers
- Tests are included but currently skipped due to Ignite requiring full
cluster setup for testing
> Add Apache Ignite ConfigStore implementation
> --------------------------------------------
>
> Key: TIKA-4583
> URL: https://issues.apache.org/jira/browse/TIKA-4583
> Project: Tika
> Issue Type: Sub-task
> Reporter: Nicholas DiPiazza
> Priority: Major
>
> h3. Overview
> Create an Apache Ignite-based implementation of the ConfigStore interface to
> enable distributed configuration storage for Tika Pipes clustering.
> h3. Implementation Details
> * Create new Maven sub-module: {{tika-pipes/tika-pipes-ignite-config-store}}
> * Implement {{IgniteConfigStore}} class that uses Apache Ignite cache for
> distributed storage
> * Add {{init()}} method to {{ConfigStore}} interface for initialization
> support
> * Provide configuration options for Ignite cluster connection
> * Ensure thread-safety and proper error handling
> h3. Technical Requirements
> * Maven module structure following Tika conventions
> * Proper Apache license headers
> * Unit tests for the implementation
> * Integration tests for distributed scenarios
> * Documentation in JavaDoc
> * Update parent pom.xml to include new module
> h3. Dependencies
> * Apache Ignite client libraries
> * Serialization support for ExtensionConfig objects
> h3. Acceptance Criteria
> * {{ConfigStore}} interface has {{init()}} method
> * {{IgniteConfigStore}} implementation passes all ConfigStore tests
> * New module builds successfully with {{mvn clean install}}
> * Documentation explains configuration options
> * Integration with existing Tika Pipes clustering infrastructure
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