void addOverflowToBeCompacted(OverflowOplog oplog) {
    synchronized (compactibleOverflowMap) {
      compactibleOverflowMap.put(oplog.getOplogId(), oplog);
    }
    basicRemoveOverflow(oplog);
    parent.scheduleCompaction();
  }
@param minSize the minimum size this oplog can be
geode-core/src/main/java/org/apache/geode/internal/cache/OverflowOplogSet.java