ChrisHegarty commented on code in PR #13555:
URL: https://github.com/apache/lucene/pull/13555#discussion_r1673550548
##########
lucene/core/src/java21/org/apache/lucene/store/MemorySegmentIndexInputProvider.java:
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@@ -24,12 +24,15 @@
import java.nio.file.Path;
import java.nio.file.StandardOpenOption;
import java.util.Optional;
+import java.util.concurrent.ConcurrentHashMap;
import org.apache.lucene.util.Constants;
import org.apache.lucene.util.Unwrappable;
@SuppressWarnings("preview")
final class MemorySegmentIndexInputProvider implements
MMapDirectory.MMapIndexInputProvider {
+ private static final ConcurrentHashMap<String, GroupedArena> ARENAS = new
ConcurrentHashMap<>();
Review Comment:
yes, let's make this an instance field on MMapDirectory.
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