private boolean mayTsFileLinkedCountReachDangerousThreshold(final PipeRealtimeEvent event) {
    if (PipeConfig.getInstance().getPipeMaxAllowedLinkedTsFileCount() == Long.MAX_VALUE) {
      return false;
    }
    final boolean mayTsFileLinkedCountReachDangerousThreshold =
        PipeDataNodeResourceManager.tsfile().getLinkedTsfileCount()
            >= PipeConfig.getInstance().getPipeMaxAllowedLinkedTsFileCount();
    if (mayTsFileLinkedCountReachDangerousThreshold && event.mayExtractorUseTablets(this)) {
      LOGGER.info(
          "Pipe task {}@{} canNotUseTabletAnymoreDeprecated(4): The number of linked tsFiles {} has reached the dangerous threshold {}",
          pipeName,
          dataRegionId,
          PipeDataNodeResourceManager.tsfile().getLinkedTsfileCount(),
          PipeConfig.getInstance().getPipeMaxAllowedLinkedTsFileCount());
    }
    return mayTsFileLinkedCountReachDangerousThreshold;
  }
These judgements are deprecated, and are only reserved for manual operation and compatibility.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/pipe/extractor/dataregion/realtime/PipeRealtimeDataRegionHybridExtractor.java