private boolean isEmptyPage(PageHeader pageHeader) {
    return pageHeader.getUncompressedSize() == 0
        && pageHeader.getCompressedSize() == 0
        && pageHeader.getStatistics() == null;
  }
handle empty page in aligned chunk, if uncompressedSize and compressedSize are both 0, and the
statistics is null, then the page is empty.

@param pageHeader page header
@return true if the page is empty
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/load/splitter/TsFileSplitter.java