Conflicts:

pom.xml

pom.xml

@@ -159,6 +159,13 @@
             <version>0.2</version>
             <scope>test</scope>
         </dependency>
+
+        <dependency>
+            <groupId>com.samskivert</groupId>
+            <artifactId>samskivert</artifactId>
+            <version>1.9</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>

src/test/java/net/openhft/chronicle/set/Issue24ChronicleSetTest.java

@@ -0,0 +1,128 @@
+/*
+ * Copyright 2015 Higher Frequency Trading
+ *
+ * http://www.higherfrequencytrading.com
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package net.openhft.chronicle.set;
+
+import net.openhft.chronicle.hash.ChronicleHash;
+import net.openhft.chronicle.hash.ChronicleHashBuilder;
+import org.junit.Test;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.HashSet;
+import java.util.Random;
+import java.util.Set;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+import static com.samskivert.util.CollectionUtil.selectRandomSubset;
+
+public class Issue24ChronicleSetTest {
+
+    public static <H extends ChronicleHash,  B extends ChronicleHashBuilder<K, H, B>, K>
+    H init(B builder, int entrySize, int averageKeySize, String fileName) {
+
+        String tmp = System.getProperty("java.io.tmpdir");
+        String pathname = tmp + "/" + fileName;
+        File file = new File(pathname);
+        try {
+            H result = builder.entries(entrySize)
+                    .averageKeySize(averageKeySize).createPersistedTo(file);
+            return result;
+        } catch (IOException ioe) {
+            throw new RuntimeException(ioe);
+        }
+    }
+
+    public synchronized static <A> ChronicleSet<A> initSet(
+            Class<A> entryClass, int entrySize, int averageKeySize, String fileName) {
+        return init(ChronicleSetBuilder.of(entryClass), entrySize, averageKeySize, fileName);
+    }
+
+    @Test
+    public void issue24ChronicleSetTest() {
+        ChronicleSet<String> set = initSet(String.class, 1_000_000, 30, "stringSet.dat");
+        ExecutorService executor = Executors.newFixedThreadPool(5);
+        for (int i = 0; i < 10; i++) {
+            Runnable worker = new WorkerThread(set);
+            executor.execute(worker);
+        }
+        executor.shutdown();
+        while (!executor.isTerminated()) {
+
+        }
+        System.out.println("Finished all threads");
+
+
+    }
+
+    public static class WorkerThread implements Runnable {
+        private final ChronicleSet<String> set;
+        public WorkerThread(ChronicleSet<String> set){
+            this.set = set;
+        }
+
+        @Override
+        public void run() {
+            System.out.println(Thread.currentThread().getName()+" Start. Command = " + set.size());
+            processCommand();
+            System.out.println(Thread.currentThread().getName()+" End.");
+        }
+
+        private void processCommand() {
+            Set<String> nomenclatures = new HashSet<>();
+            for(int i = 0; i < 10; i++) {
+                String nomenclature = "#############################" + i;
+                nomenclatures.add(nomenclature);
+
+            }
+
+            set.addAll(nomenclatures);
+
+
+            Set<String> strings = new HashSet<>(
+                    selectRandomSubset(nomenclatures, nomenclatures.size() / 2));
+
+            set.addAll(strings);
+
+
+            Set<String> toRemove = new HashSet<>();
+            Random generator = new Random();
+            for (int j = 0; j < 3; j++) {
+                int i = generator.nextInt(10);
+                String nomenclature = "#############################" + i;
+                toRemove.add(nomenclature);
+            }
+            set.removeAll(toRemove);
+
+            for (String s : set) {
+                System.out.println(s);
+            }
+
+            strings = new HashSet<>(selectRandomSubset(
+                    nomenclatures, nomenclatures.size() / 2));
+
+            set.addAll(strings);
+
+            for (String s : set) {
+                System.out.println(s);
+            }
+        }
+
+    }
+}