@Override
      public void afterConflation(ByteBuffer origBB, ByteBuffer conflatedBB) {
        if ((2 + 4 + 1 + EntryEventImpl.serialize("key1").length) != origBB.capacity()) {
          failureCause =
              "For a backup region, addition of an empty array should result in an offset of 6 bytes where as actual offset is ="
                  + origBB.capacity();
          testFailed = true;
        }
        Assert.assertTrue(
            "For a backup region, addition of an empty array should result in an offset of 6 bytes where as actual offset is ="
                + origBB.capacity(),
            (2 + 4 + 1 + EntryEventImpl.serialize("key1").length) == origBB.capacity());

      }
This tests whether an empty byte array is correctly writtem to the disk as a zero value length
operation & hence the 4 bytes field for recording the value length is absent & also since the
value length is zero no byte for it should also get added. Similary during recover from HTree
as well as Oplog , the empty byte array should be read correctly
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/OplogJUnitTest.java