public void initialize(DiskEntry entry, ValueWrapper value, byte userBits) {
      this.userBits = userBits;
      this.value = value;

      size = 0;
      needsValue = EntryBits.isNeedsValue(this.userBits);
      if (needsValue) {
        size += this.value.getLength();
      }
    }
Free up any references to possibly large data.
geode-core/src/main/java/org/apache/geode/internal/cache/OverflowOplog.java