void removeOverflow(OverflowOplog oo) {
    if (!basicRemoveOverflow(oo)) {
      synchronized (compactibleOverflowMap) {
        compactibleOverflowMap.remove(oo.getOplogId());
      }
    }
  }
@param minSize the minimum size this oplog can be
geode-core/src/main/java/org/apache/geode/internal/cache/OverflowOplogSet.java