public boolean isJarNeededToBeSavedWhenCreatingPipePlugin(final String jarName) {
    return !pipePluginMetaKeeper.containsJar(jarName);
  }
@return true if the pipe plugin is not created and the isSetIfExistsCondition is true, false
    otherwise
@throws PipeException if the pipe plugin is not created and the isSetIfExistsCondition is false
iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/persistence/pipe/PipePluginInfo.java