Make sure to create the stats index before writing if it does not exist

exist-core/src/main/java/org/exist/storage/statistics/IndexStatistics.java

@@ -107,7 +107,8 @@ public void close() throws DBException {
     }
 
     public void sync() throws DBException {
-        try(final SeekableByteChannel chan = Files.newByteChannel(dataFile,StandardOpenOption.WRITE)) {
+        try(final SeekableByteChannel chan = Files.newByteChannel(dataFile,
+                StandardOpenOption.CREATE, StandardOpenOption.WRITE)) {
             dataGuide.write(chan, getBrokerPool().getSymbols());
         } catch (final IOException e) {
             LOG.error(e.getMessage(), e);

exist-core/src/test/java/org/exist/storage/statistics/StatisticsIndexTest.java

@@ -0,0 +1,56 @@
+/*
+ *  eXist Open Source Native XML Database
+ *  Copyright (C) 2010-2011 The eXist Project
+ *  http://exist-db.org
+ *  
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *  
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *  
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ */
+package org.exist.storage.statistics;
+
+import java.net.URISyntaxException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import org.exist.storage.BrokerPool;
+import org.exist.test.ExistEmbeddedServer;
+import org.junit.*;
+
+import static org.exist.storage.NativeBroker.DEFAULT_DATA_DIR;
+import static org.junit.Assert.assertTrue;
+
+public class StatisticsIndexTest {
+
+    private static Path configFile;
+
+    @BeforeClass
+    public static void prepare() throws URISyntaxException {
+        final ClassLoader loader = StatisticsIndexTest.class.getClassLoader();
+        final char separator = System.getProperty("file.separator").charAt(0);
+        final String packagePath = StatisticsIndexTest.class.getPackage().getName().replace('.', separator);
+
+        configFile = Paths.get(loader.getResource(packagePath + separator + "conf.xml").toURI());
+    }
+
+    @Rule
+    public final ExistEmbeddedServer existEmbeddedServer = new ExistEmbeddedServer("db1", configFile, null, true);
+
+    @Test
+    public void statsFileExists() {
+        final Path dataDir = existEmbeddedServer.getBrokerPool().getConfiguration().getProperty(BrokerPool.PROPERTY_DATA_DIR, Paths.get(DEFAULT_DATA_DIR));
+        assertTrue(Files.exists(dataDir.resolve("stats.dbx")));
+    }
+}