void clearChunksInPool() {
    if (dataChunksPool != null) {
      dataChunksPool.reclaimedChunks.clear();
    }
    if (indexChunksPool != null) {
      indexChunksPool.reclaimedChunks.clear();
    }
  }
Add the chunks to the pool, when the pool achieves the max size, it will skip the remaining
chunks
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/ChunkCreator.java