From 032247ff6e4d576f179a3db2050af6bedf9c716c Mon Sep 17 00:00:00 2001
From: Mike McCandless <mikemccand@apache.org>
Date: Mon, 30 May 2016 06:37:19 -0400
Subject: [PATCH] LUCENE-7300: fix test bug to ensure the newly created file is
 in fact written through to the underlying filesystem even if
 NRTCachingDirectory is used

---
 .../apache/lucene/store/TestHardLinkCopyDirectoryWrapper.java  | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lucene/misc/src/test/org/apache/lucene/store/TestHardLinkCopyDirectoryWrapper.java b/lucene/misc/src/test/org/apache/lucene/store/TestHardLinkCopyDirectoryWrapper.java
index 819511b9c68..388b2f08f13 100644
--- a/lucene/misc/src/test/org/apache/lucene/store/TestHardLinkCopyDirectoryWrapper.java
+++ b/lucene/misc/src/test/org/apache/lucene/store/TestHardLinkCopyDirectoryWrapper.java
@@ -21,6 +21,7 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.attribute.BasicFileAttributes;
+import java.util.Collections;
 
 import org.apache.lucene.codecs.CodecUtil;
 import org.apache.lucene.util.IOUtils;
@@ -51,6 +52,8 @@ public class TestHardLinkCopyDirectoryWrapper extends BaseDirectoryTestCase {
         output.writeString("hey man, nice shot!");
         CodecUtil.writeFooter(output);
       }
+      // In case luceneDir_1 has an NRTCachingDirectory
+      luceneDir_1.sync(Collections.singleton("foo.bar"));
       try {
         Files.createLink(tempDir.resolve("test"), dir_1.resolve("foo.bar"));
         BasicFileAttributes destAttr = Files.readAttributes(tempDir.resolve("test"), BasicFileAttributes.class);