public int getLinkedTsfileCount() {
    return hardlinkOrCopiedFileToPipeTsFileResourceMap.size();
  }
Cache maps of the TsFile for further use.

@return {@code true} if the maps are successfully put into cache or already cached. {@code
    false} if they can not be cached.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/pipe/resource/tsfile/PipeTsFileResourceManager.java