@Test
  public void rangeSearch() {
    final Dbi<ByteBuffer> db = env.openDbi(DB_1, MDB_CREATE);

    final ByteBuffer key = allocateDirect(env.getMaxKeySize());
    key.put("cherry".getBytes(UTF_8)).flip();
    db.put(key, bb(1));

    key.clear();
    key.put("strawberry".getBytes(UTF_8)).flip();
    db.put(key, bb(3));

    key.clear();
    key.put("pineapple".getBytes(UTF_8)).flip();
    db.put(key, bb(2));

    try (Txn<ByteBuffer> txn = env.txnRead()) {
      ByteBuffer start = allocateDirect(env.getMaxKeySize());
      start.put("a".getBytes(UTF_8)).flip();

      ByteBuffer end = allocateDirect(env.getMaxKeySize());
      end.put("z".getBytes(UTF_8)).flip();

      List<String> keysFound = new ArrayList<>();
      CursorIterator<ByteBuffer> ckr = db.iterate(txn, KeyRange.closed(start, end));
      for (final CursorIterator.KeyVal<ByteBuffer> kv : ckr.iterable()) {
        keysFound.add(UTF_8.decode(kv.key()).toString());
      }

      System.out.println(keysFound);
      assertEquals(3, keysFound.size());

    }
  }

java.lang.IndexOutOfBoundsException
	at java.nio.Buffer.checkIndex(Buffer.java:546)
	at java.nio.DirectByteBuffer.getLong(DirectByteBuffer.java:772)
	at org.lmdbjava.ByteBufferProxy$AbstractByteBufferProxy.compareBuff(ByteBufferProxy.java:138)
	at org.lmdbjava.ByteBufferProxy$AbstractByteBufferProxy.compare(ByteBufferProxy.java:192)
	at org.lmdbjava.ByteBufferProxy$AbstractByteBufferProxy.compare(ByteBufferProxy.java:104)
	at org.lmdbjava.Txn$$Lambda$2/2024542466.compare(Unknown Source)
	at org.lmdbjava.KeyRangeType.iteratorOp(KeyRangeType.java:393)
	at org.lmdbjava.CursorIterator.executeIteratorOp(CursorIterator.java:128)
	at org.lmdbjava.CursorIterator.update(CursorIterator.java:158)
	at org.lmdbjava.CursorIterator.hasNext(CursorIterator.java:70)
	at org.lmdbjava.TxnTest.rangeSearch(TxnTest.java:299)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)