@Override
    public void onFailure(ISourceHandle sourceHandle, Throwable t) {
      LOGGER.warn("Source handle failed due to: ", t);
      if (onFailureCallback != null) {
        onFailureCallback.call(t);
      }
    }
Listen to the state changes of a source handle.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/exchange/MPPDataExchangeManager.java