From feaea07b3c4e17d1050bc530980c4f3c3405f8fb Mon Sep 17 00:00:00 2001
From: Doug Cutting <cutting@apache.org>
Date: Wed, 13 Oct 2004 17:19:58 +0000
Subject: [PATCH] Only mmap .frq files, to conserve address space.

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@150603 13f79535-47bb-0310-9956-ffa450edef68
---
 src/gcj/org/apache/lucene/store/GCJDirectory.java | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/gcj/org/apache/lucene/store/GCJDirectory.java b/src/gcj/org/apache/lucene/store/GCJDirectory.java
index 305e76082f1..eb133f1fa58 100644
--- a/src/gcj/org/apache/lucene/store/GCJDirectory.java
+++ b/src/gcj/org/apache/lucene/store/GCJDirectory.java
@@ -26,7 +26,13 @@ import java.io.File;
 public class GCJDirectory extends FSDirectory {
 
   public IndexInput openInput(String name) throws IOException {
-    return new GCJIndexInput(new File(getFile(), name).getPath());
+    // conserve address space by only mmapping the one index file that most
+    // impacts performance
+    if (name.endsWith(".frq")) {
+      return new GCJIndexInput(new File(getFile(), name).getPath());
+    } else {
+      return super.openInput(name);
+    }
   }
 }