Apache Lucene and Java 9+ #bbuzz
summary
Explains concrete changes Lucene/Solr/Elasticsearch make for Java 9+: compatibility work with the Java 9 module system access restrictions (fixes for reflection and exported packages), tests against preview builds, fixes for memory‑mapped index access and GC/cleaner behavior on Windows, and adoption of Multi-Release JAR support so builds run on Java 8 but use Java 9/10/11 optimized classes (compact strings, HotSpot intrinsics) when available; reports measurable indexing and sorting speedups and details plugin and startup gotchas.
AI-written summary · about
chapters (46)
- 0:00Introduction and background
- 1:10Java 9+ changes and challenges
- 2:20Apache Lucene and Java 7 compatibility issues
- 3:26Testing and preview builds for Java 7
- 4:15Java 7 bugfix releases and improvements
- 5:21Java 9 module system impact on Lucene
- 6:04Java 9 module system benefits
- 7:26Backward incompatibilities in Java 9
- 8:13Security manager and reflection access
- 9:18Java 9 module restrictions and exceptions
- 10:00Default reflection access behavior
- 10:45Java 9 module system and startup scripts
- 11:29Memory mapping in Lucene and Solr
- 12:34Memory mapping performance issues
- 13:18Garbage collection and small objects
- 14:25Memory mapping and Java 9 compatibility
- 15:30Performance impact of Java 9 changes
- 16:36Networking and internal changes in Java 9
- 17:19Compatibility fixes for Lucene and Solr
- 18:27Security manager and module system
- 19:12Java 11 and long-term support
- 19:34Compact strings in Java 11
- 20:18String handling improvements
- 21:21Painless scripting in Elasticsearch
- 22:03Groovy and scripting performance
- 22:23Posting format and cluster updates
- 23:11JavaFX and data converter issues
- 23:52Java 9 module system and public APIs
- 24:36HotSpot changes and performance
- 25:18Memory web directory sorting
- 25:40HotSpot optimizations and health checks
- 26:43Index recycling and performance
- 27:31Upgrading to Java 11 benefits
- 28:15Multi-release JARs and Lucene
- 28:56LZ4 compression and indexing
- 29:39Signature mismatches and fixes
- 30:22Compiler changes and source code
- 31:05Garbage collector defaults in Java 11
- 31:47Java agent and startup scripts
- 32:33Module system security implications
- 32:53Performance improvements in Elasticsearch
- 33:36Java 11 long-term support release
- 34:47Java 11 adoption and support timelines
- 35:50Minimum Java version for Lucene and Solr
- 36:40Java version comparisons and benchmarks
- 37:47Q&A and final remarks
