private void recycleChunks() {
    if (reclaimed.compareAndSet(false, true)) {
      chunkCreator.putbackChunks(chunks);
      chunks.clear();
    }
  }
Called when closing a scanner on the data of this MemStoreLAB
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MemStoreLABImpl.java