[GitHub] [lucene] uschindler commented on pull request #177: Initial rewrite of MMapDirectory for JDK-17 preview (incubating) Panama APIs (>= JDK-17-ea-b25)

[GitBox <gi...@apache.org>]

uschindler commented on pull request #177:
URL: https://github.com/apache/lucene/pull/177#issuecomment-890520954


   > Hi @uschindler,
   > I get the following compilation errors when I build your patch (Gradle build 6.3.8)
   > 
   > > Task :altJvmWarning
   > > NOTE: Alternative java toolchain will be used for compilation and tests:
   > > Project will use Java 17 from: /mnt/c/Users/jatin/home-ubuntu/softwares/jdk-17
   > > Gradle runs with Java 14 from: /usr/lib/jvm/java-14-openjdk-amd64
   > > Task :errorProneSkipped
   > > WARNING: errorprone disabled (skipped on non-nightly runs)
   > > Task :lucene:core:compileJava
   > > warning: using incubating module(s): jdk.incubator.foreign
   > > /mnt/c/Users/jatin/home-ubuntu/sandboxes/vectorAPI-effort/lucene-jdk-foreign/lucene/lucene/core/src/java/org/apache/lucene/store/MemorySegmentIndexInput.java:27: error: cannot find symbol
   > > import jdk.incubator.foreign.ResourceScope;
   > > ^
   > > symbol:   class ResourceScope
   > > location: package jdk.incubator.foreign
   > > /mnt/c/Users/jatin/home-ubuntu/sandboxes/vectorAPI-effort/lucene-jdk-foreign/lucene/lucene/core/src/java/org/apache/lucene/store/MemorySegmentIndexInput.java:51: error: cannot find symbol
   > > final ResourceScope scope;
   > > ^
   > > symbol:   class ResourceScope
   > 
   > Your help will be greatly appriciated.
   > Best Regards
   
   Hi,
   
   the current branch works with the release candidate builds of OpenJDK 17. If you get errors like this, you may possibly use a OpenJDK 17 version before Early Access Build 25.
   
   Ca you post `java -version`and tell us if you maybe compiledyour own version?


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