protected boolean checkBeforeDropPipe(final PipeMeta existedPipeMeta, final String pipeName) {
    if (existedPipeMeta == null) {
      LOGGER.info(
          "Pipe {} has already been dropped or has not been created. Skip dropping.", pipeName);
      return false;
    }

    return true;
  }
Check if we need to drop {@link PipeTask}s.

@return {@code true} if need to drop {@link PipeTask}s, {@code false} if no need to drop.
iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/pipe/agent/task/PipeTaskAgent.java